文档库 最新最全的文档下载
当前位置:文档库 › 课时作业(2) Module 1 Unit 2

课时作业(2) Module 1 Unit 2

课时作业(2) Module 1 Unit 2
课时作业(2) Module 1 Unit 2

Ⅰ. 根据句意及首字母或汉语提示完成单词(10分)

1. I have learned English for only three months, so I feel very n when I speak English.

2. I like playing basketball a lot. It’s my h.

3. My brother often wears(牛仔裤)and T-shirt.

4. Could you take a(口信)for me?

5. The mother told her child not to go with a(陌生人). It’s dangerous. Ⅱ. 单项选择(10分)

1. Thank you for me with my English.

A. help

B. helping

C. to help

D. helps

2. The girl loves all kinds of sweet food, chocolate.

A. special

B. especial

C. especially

D. specially

3. We are so excited about the football match.

A. winning

B. to win

C. win

D. to winning

4. —do you feel after a long walk?

—A bit tired.

A. What

B. How

C. How about

D. What about

5. I’m afra id of her this matter.

A. tell

B. to tell

C. telling

D. told

Ⅲ. 完成句子(10分)

1. 双胞胎通常看起来彼此一样。

Twins often look the same as.

2. 玛丽迫不及待地要骑她的新自行车。

Mary ride her new bike.

3. 我们要以我们的国家为荣(而骄傲)。

We should our country.

4. 我开始不想去, 但我很快就改变了主意。

I didn’t want to go, but I soon changed my mind.

5. 这次考试你的成绩好吗?

Did you in this exam?

Ⅳ. 句型转换(10分)

1. Sally is tall and thin. (对画线部分提问)

Sally ?

2. Thanks for your last e-mail. (改为同义句)

for your last e-mail.

3. We do well in swimming. (改为同义句)

We swimming.

4. I got a letter from my uncle yesterday. (改为同义句)

I my uncle yesterday.

5. Linda feels shy when she is with strangers. (对画线部分提问)

Linda when she is with strangers?

6. I spent two hours doing my homework yesterday. (改为同义句)

me two hours my homework yesterday.

7. When did you get to the airport?(改为同义句)

When did you the airport?

8. I feel nervous when I speak Chinese. (对画线部分提问)

you feel nervous?

9. I also like dance music. (改为同义句)

I like dance music.

Ⅴ. 阅读理解(10分)

Amy is seven years old. She can do many things by

herself. She can smell with her nose. She can use her

hands to play basketball. She can enjoy the delicious

food with her mouth. In fact, she is proud of her

sense(感觉)of taste. Even though(即使)she closes her eyes, she can still tell different food by her tongue(舌头). But her parents are worried about her. Why? Amy is deaf. She became deaf because of a high fever(高烧)when she was two years old. However, she doesn’t feel sad. She goes to school every day. She is ready to help others. She gets along well with her classmates. She decides to be a teacher in the future.

1. Amy can the food with her tongue.

A. smell

B. play

C. taste

D. lead

2. How old is Amy?

A. Seven.

B. Eight.

C. Nine.

D. Six.

3. How did Amy lose her hearing?

A. Because of young age.

B. Because of an accident.

C. Because of a high fever.

D. Because of playing basketball.

4. Are her parents worried about her?

A. I don’t know.

B. Yes, they are.

C. No, they don’t.

D. Of course not.

5. Which of the following is TRUE?

A. Amy is good to her classmates.

B. Amy doesn’t go to scho ol.

C. Amy lost her hearing when she was born.

D. Amy is proud of her sense of hearing.

答案解析

Ⅰ. 答案: 1. nervous 2. hobby 3. jeans 4. message 5. stranger

Ⅱ. 答案: 1~5. BCABC

Ⅲ. 答案: 1. each other 2. can’t wait to 3. be proud of 4. At first 5. get good marks

Ⅳ. 答案: 1. What does; look like 2. Thank you 3. are good at 4. heard from 5. How does; feel 6. It took; to do7. arrive at8. When do9. as well

Ⅴ. 答案: 1~5. CACBA

高中生物必修二课时作业27:1.2.1 两对相对性状的杂交实验过程、解释

两对相对性状的杂交实验过程、解释 一、选择题 1.下面不属于孟德尔遗传实验成功原因的是( ) A .选择了山柳菊作为实验材料 B .先研究一对相对性状,成功后再研究多对相对性状 C .对实验结果进行了统计学分析 D .设计了测交实验对假设进行验证 2.孟德尔认为遗传因子组成为YYRr 的个体,产生的配子种类及比例是( ) A .YR ∶Yr =1∶1 B .YR ∶yr =1∶1 C .R ∶r =1∶1 D .Y ∶R ∶r =2∶1∶1 3.在孟德尔两对相对性状杂交实验中,F 1黄色圆粒豌豆(YyRr)自交产生F 2。下列表述正确的是( ) A .F 1产生4个配子,比例为1∶1∶1∶1 B .F 1产生基因型YR 的卵和基因型YR 的精子数量之比为1∶1 C .基因自由组合定律是指F 1产生的4种类型的精子和卵细胞可能自由组合 D .产生的精子中,基因型为YR 和基因型为yr 的比例为1∶1 4.基因的自由组合定律发生于下图中的( ) AaBb ――→① 1AB ∶1Ab ∶1aB ∶1ab ――→② 雌雄配子随机结合――→③ 子代9种基因型 ――→④ 4种表现型 A .① B .② C .③ D .④ 5.有人种了100株番茄,它们都是同一植株的后代,发现其中有37株为红果、短毛叶;19株为红果、无毛叶;18株为红果、长毛叶;12株为黄果、短毛叶;7株为黄果、长毛叶;7株为黄果、无毛叶。根据以上结果,下列叙述中错误的是( ) A .亲本产生雌、雄配子各4种 B .亲本性状为红果、长毛叶 C .子代(F 1)群体中的基因型有9种 D .子代(F 1)群体中的纯合子占1/4 6.在F 2中出现了黄色圆粒、黄色皱粒、绿色圆粒和绿色皱粒四种表现类型,其比例为9∶3∶3∶1。与此无关的解释是( ) A .F 1产生了4种比例相等的配子 B .雌配子和雄配子的数量相等 C .F 1的四种雌、雄配子自由组合 D .必须有足量的F 2个体 7.普通小麦中有高秆抗病和矮秆易感病两个品种,控制两对相对性状的遗传因子独立遗传。现用显性纯合子高秆抗病小麦和矮秆易感病小麦杂交得F 1,F 1自交或测交,预期结果不正确的是( )

新人教版英语必修三Unit2 Grammar课时作业含答案

《Unit 2 Healthy eating Grammar & Writing》Ⅰ.用适当的情态动词完成下列句子

Thank you for your letter. I don't think I 1.________ give you any advice. I don't think the manager 2.________ trust you. It sounds as if he has decided that you 3.________ be the thief. Do you have to continue working at this company? Maybe you 4.________ find another job where the people are friendly. I think you 5.________ enjoy that more. If you stay at the meat factory, you 6.________ not be able to be happy. Besides, if you stay, the thief 7.________ do something bad to you. I don't think that 8.________ be very pleasant. If he played a trick on you, the manager 9.________ say you were the thief and call in the police. That 10.________ have serious results. I think the best thing you 11.________ do now is to look for another job and hope that it 12.________ turn out better. Yours sincerely, Mike 答案:1.can 2.will 3.must 4.should/ought to/can/need 5.may/might/will 6.will 7.may/will/might 8.will 9.might/would 10.may/will/might 11.can/should/ought to/need 12.will/would Ⅴ.阅读理解 Today fast food restaurants are very popular. One famous name is Harry's Hamburgers. Harry's Hamburgers come from America and have been in business for thirty years. There are about 5,000 Harry's Hamburgers in different countries. The food is the same everywhere. In London, New York or Paris people eat the same hamburgers and drink the same drinks. Hamburger Harry is a special friend of children everywhere. He goes to schools and talks to pupils. He goes into different classrooms, sits down on the carpet or at the desk and asks the pupils to relax. Then he begins his talk. Harry teaches children about litter. “Don't throw your boxes on the floor in my restaurants,” he says. “And don't throw my bags away in the street. If you see boxes and bags in the street, pick them up and throw them into the bin (垃圾箱).” Hamburger Harry visits children in hospitals and tells them funny stories. His restaurants give wonderful birthday parties. Parents telephone the restaurant or go there. They choose a good day for the party, arrange the food and drink and send invitations to friends. Hamburger Harry sometimes comes to the party with a bag of presents and a big birthday cake. The boys and girls sit round the tables and eat all their favorite food. They all wear paper hats and party badges(徽章). Hamburger Harry dresses in green, red and yellow and he wears two big badges. He works hard at the party. He tells jokes, sings songs and gives everyone a present. The children get colored pencils, balloons and books to draw on. They always have a good time. Their parents enjoy the party too because they don't prepare the tables and they don't cook the food. They don't have to clean the restaurant after the party. All they do is pay the bill. 1.Harry's hamburgers are sold ________. A.without drinks B.at a high price C.in the same style D.with different tastes 2.If a child holds a birthday party at Harry's restaurant, Harry may ________. A.give a big cake to the child as a gift B.ask his workers to sing for the child C.play a joke on the child for fun D.decorate the restaurant with balloons

高中生物必修二课时作业19:3.3 DNA的复制

DNA分子的复制 1. 关于DNA的分子结构和复制的叙述,错误的是( ) A. 双链DNA分子中,含氮碱基与脱氧核糖的数目相等 B. 在DNA分子的一条链中,相邻的碱基通过氢键相连 C. 解旋时需要利用细胞提供的能量和解旋酶的作用 D. DNA分子复制的特点是半保留复制和边解旋边复制 2. 将蚕豆根尖细胞放在含有32P标记的胸腺嘧啶脱氧核苷酸的培养液中,在第二次有丝分裂的中期时(不考虑染色体互换及染色体变异),发现某条染色体的一条染色单体内只有一条脱氧核苷酸链有放射性,则其姐妹染色单体内含有放射性的脱氧核苷酸链的条数是( ) A. O B. l C. 2 D. 4 3. 真核细胞DNA分子的复制( ) A. 可在细胞核和核糖体上进行 B. 以DNA分子的一条链作为模板 C. 以4种游离核糖核苷酸作为原料 D. 需要解旋酶和DNA聚合酶的催化 4.细菌在15N培养基中繁殖数代后,使细菌DNA的含氮碱基皆含有15N,然后再移入14N培养基中培养,抽取亲代及子代的DNA经高速离心分离,①~⑤为可能的结果,下列不可能出现的是( ) A.①B.②C.③D.④ 5. 下列实验使用和同位素标记法的有几项() ①卡尔文发现卡尔文循环 ②沃森和克里克发现了DNA双螺旋结构

③沃森和克里克提出DNA半保留复制假说,大肠杆菌繁殖实验证实了该假说 ④鲁宾和卡门证实光合作用中的氧气自于水 ⑤赫尔希和蔡斯发现DNA是遗传物质 A. 两项 B. 三项 C. 四项 D. 五项 6.用含32P的培养基培养细菌,将一个未标记的噬菌体在此细菌中培养9小时,经检测共产生了64个子代噬菌体,下列叙述正确的是() A.子代噬菌体内DNA的合成原料来自于细菌 B.噬菌体繁殖一代的时间约为1.0小时 C.子代噬菌体的所有物质都具有放射性 D.子代噬菌体不含32P个体与含32P个体的比例为1:31 7.下列说法中不正确的是() A. 摩尔根通过红眼雌果蝇和白眼雄果蝇的杂交实验证明了基因位于染色体上 B. 艾弗里提出的有关肺炎双球菌的体外转化实验的结论,没有得到科学家的一致公认 C. 赫尔希和蔡斯的噬菌体侵染细菌的实验证明了蛋白质不是遗传物质 D. 沃森和克里克构建了DNA双螺旋结构模型,并提出了DNA半保留复制的假说 8. 下列关于DNA分子结构和复制的叙述,错误的是( ) A. DNA分子中磷酸与脱氧核糖交替连接,构成DNA的基本骨架 B. 科学家利用“假说-演绎法”证实DNA是以半保留的方式复制的 C. DNA复制时,DNA聚合酶可催化两个游离的脱氧核苷酸连接起来 D. DNA双螺旋结构模型的建立为DNA复制机制的阐明奠定了基础 9. DNA是以半保留方式进行复制的,如果放射性完全标记的1个双链DNA分子在无放射性标记的溶液中复制两次,那么所产生的4个DNA分子的特点是() A.部分DNA分子含有放射性 B.全部DNA分子含有放射性 C.所有分子的一条链含有放射性 D.所有分子的两条链都没有放射性 10. 一个双链均被32P标记的DNA由5 000个碱基对组成,其中腺嘌呤占20%,将其置于只含31P的环境中复制3次。下列叙述不正确的是() A.该DNA分子中含有氢键的数目为1.3×104个 B.复制过程需要2.4×104个游离的胞嘧啶脱氧核苷酸 C.子代DNA分子中含32P的单链与含31P的单链之比为1∶7

住宅空间设计教案

涉外商贸学院 教案 艺术设计学院所在单位 电脑辅助设计教研室所属教研室

住宅空间设计名课程称 师教课授秦学军 1 《住宅空间设计》教案 一、课程性质:专业基础必修课 二、总学时∕学分:54学时∕4学分 三、课程类型:理论课()实践(含实验)课(√) 四、学时分配:理论课( 10 )学时实践(含实验)课( 44 )学时 五、授课专业、层次:2010环境艺术设计专科 六、本课程的教学目的和要求: 通过《住宅空间设计》课程的教学,引导学生掌握室内设计操作技巧和方法,培养学生在室内设计学习过程中基本操作能力,使学生通过课堂学习和项目实训熟练地掌握家居设计的过程和创意表现的专业技能。 七、本课程的教学重点、难点 1.课程重点 让学生通过对室内设计原理的讲授,使学生了解室内设计,从而为今后的室内设计提供了设计的理论依据,并为室内设计打下扎实的理论基础。 2.课程难点 实际现场观察与测量及业主的沟通,平面图介绍、平面功能分区,家居布置与平面尺寸及装修材料的选用等。 八、教材和参考书 1.《居住空间设计实训》,孔小丹编著,东方出版中心, 2010年7月 2.《室内设计原理》,来增祥编著,重庆大学出版社,2010年4月第2版

2 《住宅空间设计》教案内容 一、章节内容:第一章室内设计理论知识 二、课时:8学时 三、教学目的 本章让学生通过对室内设计原理的讲授,使学生了解室内设计,从而为今后的室内设计提供了设计的理论依据,并为室内设计打下扎实的理论基础。 四、教学重点与难点 本章重点:掌握室内设计的含义、内容、程序及室内装潢、室内装修、室内设计概念的区别,家居设计功能分区,家居照明照度的控制。 本章难点:家居设计中人体工程学的应用,灯具布局,室内色彩的设定。 五、教学方法:身教胜于言教,教师在讲授理论知识的同时,应注重技法的示范辅导,及时解决和纠正学生在学习过程中的偏差和困难。鉴于住宅室内设计的特殊性,在教学中应须注意:(1)因材施教 (2)多媒体理论讲解 (3)实地考察 (4)命题方案设计 (5)讨论 六、教学过程设计 1.室内设计介绍 (1)室内设计的含义 室内设计是将人们的环境意识与审美意识相结合,从建筑内部把握空间进行设计的一项活动。室内设计是根据室内的使用性质和所处的环境,运用物质材料、工艺技术及艺术手段,创造出功能合理、舒适美观,符合人的生理、心理需求的内部空间;赋予使用者愉悦的,便于生活、工作、学习的理想的居住与工作环境。 (2)室内装潢、室内装修、室内设计概念的区别 室内装潢从视觉效果的角度来看,指室内地面、墙面、顶棚等各界面的色彩处理、装饰材料的作用及配置效果。室内装修着重于工程技术、施工工艺和构造做法等方面的研究。室内设计指综合的室内环境设计,除室内装修、室内设计两项内容外,还包括氛围、意境等心理环境和个性 特色等文化环境方面的创造。 3 (3)室内设计的内容 室内设计的内容见图1-1。

人教七年级上册英语unit2课时作业练习(含答案)

七年级上册英语unit2课时作业练 习 第1课时(Section A 1a-2d) 一、根据句意及首字母提示完成单词。 1.My father’s mother is my g. 2.My father’s father is my g. 3.My father’s sisters are my a. 3.My father’s sisters are my 4.Li Ming is my f.He is 10 years old. 4.Li Ming is my 5.She is my s. 二、选词填空。 his parents apples grandmother those 1.My father and my mother are my . 2.This is my https://www.wendangku.net/doc/476341436.html, is Jack. 3.What are these? They are . 4.are my sisters. 5. Your mother’s mother is your . 三、用this,that,those或these填空。

1.is a ruler and is a pen. 2. –Are your friends? --Yes,they are. 3.—Are your cups? --No. These are her cups. 4.Dad,is my friend ,Kate. 5.—What’s over there? --It’s a school. 第2课时(Section A Grammar Focus –3c) 一、用be动词的适当形式填空。 1.I eleven. 2.-Is this your ball? --Yes ,it . 3.Who they? 4.“I”an English letter or an English word. 5.Here two red apples. 二、单项选择。 ()1.There are three in the basketball. A.potato B. book C.toy D. apples ()2.My mother gives a nice toy bike for my birthday. A. I B. me C. my D. mine

下学期 Unit 2 What time is it 第四课时

下学期Unit 2 What time is it 第四课时 下学期Unit 2 What time is it 第四课时 课题:Unit 2 What time is it? 教学重难点: 1.本课时的重点是对四个动词词组的掌握。 2.本课时的教学难点是句型“It’s time to…”,学生刚学过“It’s time for…”,可能会把这两个句型混淆起来,建议教师注意对这两个句型进行比较。 教具准备:

1.与教材内容相关的课件、声音、图片等媒体素材 2.教师准备相关的词卡。 教学过程: 1.数学游戏:教师给学生出一些数学算式,可以是加减混合运算,也可是连加连减,学生算出来后用手指头表示答案。 2.播放本单元Let’s chant B中的歌谣,让学生边听边做动作。 1.玩时钟游戏。教师用手臂做时针和分针,问:What time is it? 学生快速回答It’s…o’clock. It’s time for… 2.教师做出4:35的`手形,问:What time is it? 引导学生说出:It’s 4:35. School is over. 教师接着问:School is over. Where do you go? 学生回答:We go home. 教师由此导入句型It’s time to go home.

1.教师可采用A部分Let’s do的形式操练新的句型。教师借助图片和听听做做活动教授其它几个动词词组,如:教师发指令:It’s time to get up.请学生做起床、穿衣服的动作;教师说:It’s time to go to school.请学生做背书包、走路的动作,以此类推。要注意多让学生听句型:It’s time to…,为下一课时重点学生句型做铺垫。 2.听音跟读,注意强调语音语调。 3.画画说说:学生模仿B Let’s learn部分的插图画出自己的活动时间,然后在四人小组中交流,比如学生A六点起床,他就指着自己的画说:It’s 6 o’clock. It’s time to get up. 4.Story time (1) 看课件或录像,听故事。 (2) 进行理解性问答。教师可介绍一些关于“愚人节”的知识。要教育学生不能开过份的玩笑愚弄别人。 (3) 模仿跟读和分角色朗读。

高中生物必修二课时作业20:1.1.1 一对相对性状的杂交实验过程和解释

一对相对性状的杂交实验过程和解释 1 假说--演绎法是现代科学研究中常用的一种科学方法,下列属于孟德尔在发现分离定律时的“演绎”过程是() A. 生物的性状是由遗传因子决定的 B. 由F2中出现的分离比推测,生物体产生配子时,成对的遗传因子彼此分离 C. 若F1产生配子时遗传因子分离,则测交后代的两种性状比接近1:1 D. 若F1产生配子时遗传因子分离,则F2中三种遗传因子组成的个体比接近1:2:1 2 豌豆和小麦的高茎对矮茎均为显性.将纯种的高茎和矮茎豌豆间行种植,另将纯种的高茎和矮茎小麦间行种植.自然状态下,从矮茎植株上获得的F1的性状是() A. 豌豆和小麦均有高茎和矮茎 B. 豌豆均为矮茎,小麦有高茎和矮茎 C. 豌豆和小麦的性状分离比均为3:1 D. 小麦均为矮茎,豌豆有高茎和矮茎 3 关于“分离定律”的揭示和验证的描述,正确的是() A. 孟德尔在豌豆杂交实验中运用了“假说-演绎”法,其基本步骤是:提出问题-作出假说-设计实验-实验验证-得出结论 B. 孟德尔在实验数据处理中运用了统计学方法,使得遗传学研究从定量研究上升到定性研究 C. 孟德尔通过测交实验的结果推测出F1产生配子的种类和个数,从而验证其假说的正确与否 D. 随着科学的不断发展,利用现代生物学手段---花药离体培养也可直接证明“分离定律” 4 下列有关孟德尔豌豆杂交实验的叙述不正确的是() A. 实验过程中孟德尔运用了杂交实验法和假说-演绎法 B. 用闭花传粉的豌豆做人工杂交实验,结果既可靠又容易分析 C. “成对的遗传因子彼此分离”是孟德尔提出假说的主要内容之一 D. 孟德尔提出的假说的核心内容是“性状是由位于染色体上的基因控制的” 5 下列关于性状显隐性或纯合子与杂合子判断方法的叙述,错误的是() A. 甲×乙-→只有甲→-甲为显性性状 B. 甲×甲--→甲+乙-→乙为隐性性状

《公共空间设计》课程标准

《公共空间设计》 课程代码:zh012 课程类别:专业技能课 学 分:5 总 学 时:80 适用专业:装潢艺术设计 一、前 言 (一) 课程性质 1、课程性质与作用 该课程是装潢艺术设计专业二年二期学生的室内设计课程,教学对象学习过工程制图、设计表现、室内设计原理等课程,具备一定的专业设计与制作能力。本课程属专业必修课,是专业核心技术课程模块之一。 2、前导和后续课程 图1:前导及后续课程 (二)课程设计思路 本课程以办公类、商业类、餐饮类、休闲类、展览类、娱乐类空间设计项目为载体贯穿始终,利用项目的执行,将公共空间的类型与特征、公共空间的设计方法、设计流程及手绘方案表现、AUTO CAD 、3Ds MAX 相关软件的运用等相关知识与技能按照项目流程及技术方法需要在各子项目和任务中进行嵌入与引导,指导学生完成项目任务,形成课程可展示成果。 校企双方教师以学生完成项目的操作过程、阶段性成果和项目成果综合质量来评定学生课程成绩。作品完成后,组织对作品进行适当的陈设、展示,使学生形成必要的成就感。 前导课程 室内设计原理 室内设计制图 室内设计表现 后续课程 公共空间设计 专题设计 毕业设计 顶岗实习

二、课程目标 (一)知识目标 1、知道公共空间的基本种类; 2、了解地域经济、文化对相关公共空间的影响; 3、了解国家或行业协会对公共空间设计的相关技术标准与要求; 4、了解室内设计行业新技术、新工艺与新材料的发展与基本用途; 5、理解各类公共空间的特定功能; 6、掌握室内设计相关原理、图纸规范; 7、掌握空间形态的组合方式与设计方法。 (二)能力目标 通过导入与实施项目,学生能运用公共空间特定功能、表现形式、装饰工程要求等相关知识,根据室内设计相关的技术标准等要求,按照空间设计的基本流程、设计手法和操作规范,利用手绘表现、计算机CAD、3Dsmax软件平台相关技术,完成符合课程项目要求的设计图纸,预设效果,最后编制设计说明,并与相关图纸一起装订成册。 (三)素质目标 1、表达与交流能力——在项目执行过程中需保持有效的口头沟通、项目组内工作的有效衔接、设计方案的有效陈述与说明; 2、知识产权维护能力——在项目执行过程中,坚持设计的原创性,注意保护设计成果的知识产权,并不窃取他人的设计成果; 3、执行力——能够正确理解项目任务书相关要求,能够正确的按照设计计划方案执行相关任务,按时、按质地完成并提供阶段性可展示成果; 4、职业道德和敬业精神——按时到岗,保持岗位的整洁,图纸摆放、收纳、整理有序,形成有效的技术档案,树立良好的知识产权维护意识; 5、组织能力——保持项目组内工作的有效衔接,各岗位之间保持有序、有效的负责关系,保障项目的正常实施; 6、操作规范——遵循室内设计工作室计算机、打印机、扫描仪等相关设备操作规范。 三、课程学习内容与学时分配 (一)课程总体设计 通过本课程的学习,使学生理解公共空间设计的基本理论知识,掌握公共空间设计的基本流程和设计手法,为其胜任室内设计师的工作奠定基础。 本课程共计80学时,分为6个教学单元,教学单元、任务及学时分配设计具体见表1。

高考英语一轮复习 Unit2 Robots课时作业 新人教版选修7

课时作业(三十二) Unit 2 Robots Ⅰ.用所给词的适当形式填空 1.The superstar showed up at the court,________(accompany) by his manager. 2.The young lady dressed________(elegant) when she went to work. 3.He was right in his________(assess) and wrong in his prediction. 4.He is an________child.He always________his parents and never________rules in school or laws in society.(obey) 5.Everyone knows she is a________girl who has a________for singing.(talent) 6.It________in his________that the country was in a messy________.(state) 7.To the________of the boss,his products could________the need of the customers.(satisfy) 8.The old blind man asked me to do him a________and find his________book.(favour) 9.It is reported that the lost boy________(not find)so far. 10.Having a trip abroad is certainly good for the old couple,but it remains________(see) whether they will enjoy it. 答案:1.accompanied 2.elegantly 3.assessment 4.obedient;obeys; disobeys 5.talented; talent 6.was stated; statement; state 7.satisfaction; satisfy 8.favour;favourite 9.hasn't been found 10.to be seen Ⅱ.完成句子 1.John__________________(极其渴望)to become a writer of the science fiction. 2.__________________(据宣布)the new library which is under construction would be opened to the public next year. 3.His father isn't__________________(支持)his thought while his mother always__________________(陪他去书店). 4.Do your parents often__________________(打电话)to ask your recent progress? 5.__________________(且不说费用多少),do we actually need a second car? 6.Owing to his hard work,his classmates all think John__________________(注定会成功). 7.I'm about to__________________(转身)and see who he is but my phone rings. 8.Her only fear was that her little son would______________(让……一个人留下)in the world in case something happened to her.

高中生物必修二课时作业26:4.2 基因对性状的控制

第2节基因对性状的控制 [对点强化] 强化点1中心法则 1.1983年科学家证实,引起艾滋病的人类免疫缺陷病毒(HIV)是一种逆转录病毒。下列能正确表示HIV感染人体过程的“遗传信息流”示意图是() [解析]HIV是以RNA为遗传物质的病毒,能以RNA为模板逆转录合成DNA,该DNA又和人体细胞核内的DNA整合在一起,整合后的HIV的DNA分子在人体细胞又可以复制,还可以转录出RNA,并以RNA为模板翻译成病毒的蛋白质。 [答案] D 2.下列关于如图所示过程的说法,错误的是() A.正常情况下,③④⑥在动植物细胞中都不可能发生 B.①③过程的产物相同,催化的酶也相同 C.①②进行的场所有细胞核、线粒体、叶绿体;⑤进行的场所为核糖体 D.①②⑤所需的原料分别为脱氧核苷酸、核糖核苷酸、氨基酸 [解析]①过程需要解旋酶和DNA聚合酶,③过程需要特定的逆转录酶,故B 选项错误。 [答案] B

3.遗传信息从RNA→RNA途径是对中心法则的补充,下列能够发生该传递途径的生物是() A.烟草 B.烟草花叶病毒 C.噬菌体 D.大肠杆菌 [解析]由RNA→RNA说明发生了RNA的复制,该过程只发生在RNA病毒中。烟草、噬菌体以及大肠杆菌都是以DNA为遗传物质的生物,其遗传信息是通过DNA→RNA→蛋白质途径传递的。 [答案] B 4.中心法则揭示了生物遗传信息传递与表达的过程。下列有关中心法则的说法错误的是() A.a过程主要发生在细胞分裂的间期,b和c在细胞的整个生命过程中都能发生 B.c过程中mRNA上所含有的密码子均能在tRNA上找到与其相对应的反密码子 C.逆转录病毒的RNA在宿主细胞内须通过d、b、c过程才能最终合成蛋白质 D.细胞中的基因通过b、c过程合成的蛋白质可直接或间接地影响生物的性状[解析]a、b、c、d、e分别表示DNA复制、转录、翻译、逆转录和RNA复制,DNA复制发生在细胞分裂的间期,转录和翻译发生在细胞整个生命过程中,A正确;终止密码子没有与之对应的反密码子,也就没有相对应的tRNA,B错误;逆转录病毒携带的RNA在宿主细胞内先经逆转录合成DNA,再利用宿主细胞中的原料经转录和翻译过程最终合成蛋白质,C正确;b和c为基因表达,基因可以通过控制酶的合成控制代谢过程,从而间接影响生物性状,还可以通过控制蛋白质的结构直接影响生物的性状,D正确。 [答案] B 5.《科技日报》报道,科学家近日发现一种动物能否被驯化并和人类很好相处,取决于这种动物的“驯化基因”。在生物体中,基因控制性状表现的主要途径

2019-2020年新人教版英语必修三Unit2 Grammar课时作业含答案

2019-2020年新人教版英语必修三Unit2 Grammar课时作业含答案Ⅰ.用适当的情态动词完成下列句子

Thank you for your letter. I don't think I 1.________ give you any advice. I don't think the manager 2.________ trust you. It sounds as if he has decided that you 3.________ be the thief. Do you have to continue working at this company? Maybe you 4.________ find another job where the people are friendly. I think you 5.________ enjoy that more. If you stay at the meat factory, you 6.________ not be able to be happy. Besides, if you stay, the thief 7.________ do something bad to you. I don't think that 8.________ be very pleasant. If he played a trick on you, the manager 9.________ say you were the thief and call in the police. That 10.________ have serious results. I think the best thing you 11.________ do now is to look for another job and hope that it 12.________ turn out better. Yours sincerely, Mike 答案:1.can 2.will 3.must 4.should/ought to/can/need 5.may/might/will 6.will 7.may/will/might 8.will 9.might/would 10.may/will/might 11.can/should/ought to/need 12.will/would Ⅴ.阅读理解 Today fast food restaurants are very popular. One famous name is Harry's Hamburgers. Harry's Hamburgers come from America and have been in business for thirty years. There are about 5,000 Harry's Hamburgers in different countries. The food is the same everywhere. In London, New York or Paris people eat the same hamburgers and drink the same drinks. Hamburger Harry is a special friend of children everywhere. He goes to schools and talks to pupils. He goes into different classrooms, sits down on the carpet or at the desk and asks the pupils to relax. Then he begins his talk. Harry teaches children about litter. “Don't throw your boxes on the floor in my restaurants,” he says. “And don't throw my bags away in the street. If you see boxes and bags in the street, pick them up and throw them into the bin (垃圾箱).” Hamburger Harry visits children in hospitals and tells them funny stories. His restaurants give wonderful birthday parties. Parents telephone the restaurant or go there. They choose a good day for the party, arrange the food and drink and send invitations to friends. Hamburger Harry sometimes comes to the party with a bag of presents and a big birthday cake. The boys and girls sit round the tables and eat all their favorite food. They all wear paper hats and party badges(徽章). Hamburger Harry dresses in green, red and yellow and he wears two big badges. He works hard at the party. He tells jokes, sings songs and gives everyone a present. The children get colored pencils, balloons and books to draw on. They always have a good time. Their parents enjoy the party too because they don't prepare the tables and they don't cook the food. They don't have to clean the restaurant after the party. All they do is pay the bill. 1.Harry's hamburgers are sold ________. A.without drinks B.at a high price C.in the same style D.with different tastes 2.If a child holds a birthday party at Harry's restaurant, Harry may ________. A.give a big cake to the child as a gift B.ask his workers to sing for the child C.play a joke on the child for fun D.decorate the restaurant with balloons

译林版三年级英语下册Unit2 第二单元第三课时教案

【精品】Unit2 In the library Sound time Song time Checkout time Ticking time (教案)译林版(三起) 三年级英语下 【教学内容】 Sound time, Song time , Checkout time & Ticking time 【教学目标】 知识目标: (1)能熟练听懂、会说祈使句的否定句:“Don’t …”。 (2)能掌握字母P在单词中的发音。 (3)会唱歌曲《Don’t talk, Tom !》。 2.能力目标: 能掌握字母P在单词中的发音。 3.情感目标: 做个懂礼貌讲文明的孩子。 【教学重点】 (1)能熟练听懂、会说祈使句的否定句:“Don’t …”。 (2)能掌握字母P在单词中的发音。 (3)会唱歌曲《Don’t talk, Tom !》。 【教学难点】 能熟练听懂、会说祈使句的否定句:“Don’t …”。 【教学方法】 1.任务型教学法:学生在完成任务的过程中,提高了综合语言运用能力。 2.多媒体辅助教学法:设计新颖,化解了教学难点,提高了学生学习积极性。 【教具准备】 多媒体课件、图片、卡片。 【教学过程】 Step1.Warm-up

1.Teaching aims: (1)能熟练听懂、会说祈使句的否定句:“Don’t …”。 (2)能掌握字母P在单词中的发音。 (3)会唱歌曲《Don’t talk, Tom !》。 2.Let’s review 呈现Cartoon中的六幅图片,让学生看图复述课文内容。 重点复习Don’t...这个句型。 3.Play a game 游戏规则: 快速说出图片对应的英文内容,看谁说的又快又准噢! 此环节复习前一课时书中课文最下面一排的动词及否定Don’t ... Step2 Presentation 1.Try to say 呈现一张图书馆的图片,提问Where ? 学生会回答In the library.以此复习library这个单词,接着要求四人一小组,以图书馆为场景,用Don’t…来说句子,比一比哪组说的最多! 2.Read and write 在前一环节说的基础上,接着呈现Checkout time中的图片,课前让学生先在书上画好图并写上对应的英文表达,以便于课堂上核对答案,节省课堂时间。 Don’t shout. Don’t eat. Don’t run. Ticking time I can say “Don’t …” I can understand the signs in the library. 4.Song time (1)Let’s have a rest !让我们休息一下吧! Enjoy the song 观看视频欣赏歌曲。

相关文档
相关文档 最新文档