book5 Unit 5课时作业

课时作业(十)

Section ⅡLearning about Language

& Using Language

Ⅰ.阅读理解

A

A nosebleed can be frightening to get or see，but try to stay calm.Most nosebleeds look much worse than they really are.Almost all nosebleeds can be treated at home.

If you get a nosebleed，sit down and lean slightly forward.Keeping your head above your heart will make your nose bleed less.Lean forwards so that the blood will flow out of your nose instead of down the back of your throat.If you lean back，you may swallow the blood.This can make you uncomfortable.

Use your thumb and index fingers to press together the soft part of your nose.Keep holding your nose until the bleeding stops.Don’t let go for at least 5 minutes.If it’s still bleeding after that，hold it again for 10 minutes straight.You can also place an ice pack across the toe of your nose.Once the bleeding stops，don’t do anything that may make it start again，such as bending over or blowing your nose.

The most common causes of nosebleeds are dryness(often caused by indoor heat in the winter)and nose picking.These two things work together—nose picking occurs more often when the liquid in the nose is dry.Other，less common causes include injuries，colds or cocaine use.Children may stick small objects up their nose.Old people may have infections or high blood pressure.The cause of nosebleeds is often unknown.

Most nosebleeds aren’t serious.They occur in the front part of the

nose and stop in a few minutes.

A few nosebleeds start in large vessels(血管)in the back of the nose，which can be dangerous.They may occur after an injury.This type of nosebleed is more common in the elderly and is often due to high blood pressure，daily aspirin use or bleeding disorders.

语篇解读：本篇主要讲述了流鼻血的原因及急救措施。

1.According to the text，nosebleeds ________.

A．are not frightening to get or see

B．are usually not serious and can be cured with the right method at home

C．must be treated by doctors in the hospital

D．aren’t dangerous at all

答案：B

解析：推理判断题。由第一段最后一句可知D项正确，其余选项与文意不符。

2.Which of the following is NOT the right way to treat nosebleeds？

A．Cool your nose with ice or other cold things.

B．Press your nose slightly with your fingers.

C．Lean backwards to slow down the flow of flood.

D．Lean your head forwards，just above your chest.

答案：C

解析：细节理解题。由第二段第一句可知正确的方法是lean forwards，而不是lean backwards。

3.What’s the main idea of Paragraph 4？

A．Nosebleeds are caused by some diseases.

B．Nosebleeds are caused by the dry weather.

C．Your nose may be infected.

D．The causes of nosebleed.

答案：D

解析：主旨大意题。第四段主要讲述了流鼻血的原因。

4.Which of the following is TRUE according to the passage？

A．It may be more dangerous if the back part of your nose bleeds.

B．Nosebleeds can cause the disease related to blood pressure in older people.

C．Nosebleeds occur to kids because of infections.

D．Many nosebleeds are not as serious as they look.

答案：A

解析：细节理解题。根据最后一段第一句可知鼻子后部的血管流血会更严重。

B

Bicycle Safety

Operation Always ride your bike in a safe，controlled manner on campus(校园)．Obey rules and regulations.Watch out for walkers and other bicyclists，and always use your lights in dark conditions.

Theft Prevention Always securely lock your bicycle to a bicycle rack—even if you are only away for a minute.Register your bike with the University Department of Public Safety.It’s fast，easy，and free.Registration permanently records your serial number，which is useful in the possible recovery of the bike stolen.

Equipment

Brakes Make sure that they are in good working order and

adjusted properly.

Brakes Make sure that they are in good working order and adjusted properly.

Helmet A necessity，make sure your helmet meets current safety standards and fits properly.

Lights Always have a front headlight—visible at least 500 feet in front of the bike.A taillight is a good idea.

Rules of the Road

Riding on Campus As a bicycle rider，you have a responsibility to ride only on streets and posted bicycle paths.Riding on sidewalks or other walkways can lead to a fine.The speed limit for bicycles on campus is 15 mph，unless otherwise posted.Always give the right of way to walkers.If you are involved in an accident，you are required to offer appropriate aid，call the Department of Public Safety and remain at the scene until the officer lets you go.

Bicycle Parking Only park in areas reserved for bikes.Trees，handrails，hallways，and sign posts are not for bicycle parking，and parking in such spots can result in a fine.

If Things Go Wrong

If you break the rules，you will be fined.Besides violating rules while riding bicycles on campus，you could be fined for：?No bicycle registration$25

?Bicycle parking banned$30

?Blocking path w ith bicycle$40

?Violation of bicycle equipment requirement$35

语篇解读：本文为一篇说明文，属于校园生活话题。主要介绍了在校园中安全骑自行车的注意事项。

5.Registration of your bicycle may help you ________.

A.find your stolen bicycle

B.get your serial number

C.receive free repair services

D.settle conflicts with walkers

答案：A

解析：推理判断题。根据文章第二段可知，B项不是登记注册自行车的好处，而是登记注册的流程之一，即要“永久记录下你自行车的号码”；C项“收到免费修理服务”在文中未提及，也不是登记注册的好处之一；D项“解决和路人的冲突”在原文中也未提到。根据“Registration permanently records...which is useful in the possible recovery of the bike stolen.”可推断出登记注册自行车有助于寻回被盗或丢失的自行车。故A项正确。

6.According to the passage，what bike equipment is a free choice for bicycle riders？

A.Brakes. B．A helmet.

C.A headlight. D．A taillight.

答案：D

解析：推理判断题。首先需读懂题干中的关键词free choice“可选的，非必须的”，然后根据“Equipment”中描述的内容，尤其是关键信息词“Make sure，necessity，Always”等可知A、B、C三项全部是必须有的，而且是要一直必备的设备。同时根据“A taillight is good idea.”可推断出a taillight如果有的话会很好，但并不是强制性必须有的。故D项正确。

7.If you lock your bicycle to a tree on the campus，you could be fined ________.

A.$25 B．$30

C．$35 D．$40

答案：B

解析：细节理解题。根据“Bicycle Parking”和“If Things Go Wrong”两部分内容可知禁止把自行车锁到树上，而且违反此规定的行为要被处30美元的罚款，故选B项。

8.What is the passage mainly about？

A.A guide for safe bicycling on campus.

B.Directions for bicycle tour on campus.

C.Regulations of bicycle race on campus.

D.Rules for riding motor vehicles on campus.

答案：A

解析：主旨大意题。本题考查理解全文、提炼信息、概括总结的能力。此题需要通篇理解文章传递的信息，并把握关键词眼才可能概括出全文的主旨。对比四个选项，A项意为“校园自行车安全指南”，和全文的关键字眼“校园、自行车、安全”密切相关，所以正确。B 项意为“校园自行车观光指南”；C项意为“校园自行车比赛规则”；D项意为“校园机动车行车规定”，这些选项均与文章内容无关。

Ⅱ.短文改错

(2014·保定中学期中考试)

Today Professor Hudson，foreign teacher from Beijing University，who gave us an English lesson.All of us were deep impressed by this unforgettable lesson.The professor began the class in an amusing English story，which attracted their attention at once.He spoke slowly and clearly so that we could follow him

well.Greatly inspiring，most of us took an active part in classroom activities.After class，many students were spoke highly of him.They said never before have they experienced such interesting a class.From his lesson，we realized what it is not so difficult to learn English well if we find a good way.

答案：Today Professor Hudson，∧

a

foreign teacher from Beijing

University，who

＼gave us an English lesson.All of us were

deep deeply

impressed by this unforgettable lesson.The professor began the class

in

with an amusing English story，which attracted their

our attention at

once.He spoke slowly and clearly so that we could follow him

well.Greatly inspiring

inspired，most of us took an active part in classroom

activities.After class，many students were

＼spoke highly of him.They

said never before have

had they experienced

such

so interesting a

class.From his lesson，we realized what

that it is not so difficult to learn

English well if we find a good way.

Ⅲ.语法填空

(2013·广东珠海第二次高三英语模拟试题)

Ma Wendi is used to curious glances __1__ she walks six dogs at the same time.They are not all hers.__2__ 25-year-old veterinary graduate is a full-time dog walker.

“I have to take care of twelve dogs at most，”said Ma.She charges 500 yuan a month per dog，and most customers leave their dogs at her house for a week.The __3__(busy)time is around the

Spring Festival，because many people go back to their hometowns for family reunions __4__ go traveling.

“__5__(compare)with people who have to be in their offices during the day，I don’t have to get up early __6__(squeeze)into the subway carriages in the rush hour，and I still make a decent salary，”she said.

“But it’s a tiring job.I have to work whenever there are dogs at home，and no time to enjoy __7__.Sometimes I want to go out for a meal or shopping，but I can’t do so __8__ I worry about them，”she said.

Ma knows __9__ the dogs’ names，and when she calls one’s name，the dog instantly knows she __10__(refer)to it.

1.________

2.________

3.________

4.________

5.________

6.________

7.________8.________9.________

10.________

语篇解读：本文讲述了一位25岁的大学生做了一名专业遛狗师。介绍了这份工作的优点、缺点以及马文迪在工作中所获得的快乐。

1.答案：when

解析：引导时间状语从句，表示“当她同时遛六只狗的时候……”。

2.答案：The

解析：考查冠词。修饰graduate，由25-year-old veterinary可知使用定冠词the。

3.答案：busiest

解析：考查最高级。前面the也提示了此处应使用最高级。

4.答案：or

解析：并列连词or连接“family reunions”和“go traveling”。

5.答案：Compared

解析：compared with“与……相比较”，主语I是被比较的对象。

6.答案：to squeeze

解析：不定式to do表目的。

7.答案：myself

解析：短语enjoy oneself意为“玩得开心”。

8.答案：because

解析：连接前后两个句子，且这两个句子之间为因果关系。

9.答案：all

解析：all the dogs’ names指的是“所有狗的名字”。

10.答案：is referring

解析：所给动词在句中充当谓语，再考虑时态和语态，可知此处用现在进行时。

Ⅳ.语篇翻译

在我们的日常生活中，当有人轻度(mildly)烧伤(burnt)、突然生病(fall ill)或中毒(poison)时，我们经常需要实施一些临时的(temporary) 救治。为了正确地实施急救(first aid)，我们必须了解多种(variety)常见的症状(symptom)，并反复(over and over again)记忆急救的步骤。总之，急救极其(vital)重要。

_______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________

答案：In our daily life，we often need temporary treatments when someone is mildly burnt，falls ill or becomes poisoned suddenly.In order to perform first aid properly，we must know about a variety of common symptoms and remember the first aid process over and over again.In a word，first aid is of vital importance.

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( )

人教版选修八unit1-unit5期末复习资料

Ⅰ. 语言知识及应用(共两节满分45分) 第一节完形填空(共15小题；每小题2分，满分30分) 阅读下面短文，掌握其大意，然后从1—15各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。 I’m going to share my most embarrassing experience in life with you. It turned out to be one of my life’s most valuable 1 . This summer, I 2 a dance camp organized by the high school dance team. We went to learn new tricks, techniques and knowledge about the art of dance. I arrived at the camp, being very 3 of my ability to be a good dancer; of course I was 4 high marks and praise. My rich experience and long time in the dance team qualified me for the top class, which I felt was a right 5 . However, when the class began I 6 that I did not know as much as I thought I did. My over-confidence 7 me to fall flat on my face. It seemed as if every girl in the class could perform challenging jumps, leaps and other 8 tricks except me. All of that ―former experience‖got me nowhere. Because of that I became discouraged and wanted to 9 immediately. My frustration kept me from doing my best. As a result the final performance was nothing but embarrassing. On the stage I 10 forgot how to dance and most of the time I just stood there, looking 11 , while the other girls performed like professionals. How embarrassing it was! From this experience I 12 that people are sometimes not as good at something as they think they are; there is always someone out there that can do it 13 than you. I also learned that there is always room for 14 , and I should do my best whatever the situation is. I know if I do not try my best, I will 15 even before I begin. 1. A. lessons B. jokes C. lectures D. expressions 2. A. attended B. checked C. supported D. started 3. A. worthy B. confident C. fond D. aware 4. A. showing B. expecting C. receiving D. wasting 5. A. suggestion B. method C. decision D. style 6. A. hoped B. pretended C. realized D. explained 7. A. caused B. allowed C. cheated D. advised 8. A. strange B. difficult C. simple D. funny 9. A. perform B. struggle C. survive D. quit 10.A. completely B. quickly C. probably D. hardly 11.A. happy B. stupid C. amazed D. surprised 12.A. remembered B. lied C. concluded D. wondered 13.A. better B. deeper C. faster D. wider 14.A. improvement B. experienced C. success D. creation 15.A. fall B. fear C. hesitate D. fail 二、语法填空（共10小题；每小题1.5分，满分15分） 阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格注填入一个适当的词或使用括号中词语的正确形式填空 Somebody once asked me how to be peaceful and happy. I thought the question was easy to answer: Don't attach yourself to anything__16_____ you will be peaceful and happy. But then quite some time later, I discovered this direct and simple answer may not work for all people.

2017年春人教版英语必修五课时作业：Unit 5 section 3

Unit 5 Section Ⅲ Ⅰ.单词拼写导学号 49152515 1．Under the doctor's careful _treatment__，your father is sure to get over it. 2．More than 1,000 students attend the adult_ceremony__(仪式) in the hall every year. 3．Transferring to another school made a great _difference__to the shy girl. 4．An _ambulance__arrived only eight minutes after they dialed 120. 5．The bank will bring_pressure__(压力)to bear on you if you don't pay. 6．The young firemen showed great_bravery__(勇气) in face of danger. 7．We should_apply__(应用) this theory to practice. 8．He was _awarded__(给予荣誉) in many ways for his contributions to the country. Ⅱ.选词填空导学号 49152516 put one's hands on，a large number of，be proud of，a good knowledge of，cut off，at present，be involved in，apply...to... 1．Our English teacher has_a_good_knowledge_of__English. 2．His mother_is_proud_of__what he has achieved in study. 3．There are_a_large_number_of__foreign students in my school. 4．I_put_my_hands_on__my lost wallet at the corner of the street. 5．These tourists were_cut_off__from outside because of the snowstorm. 6．We are very busy_at_present__. 7．We_were_involved_in__the negotiation up until the last minute. 8．This is the first time that the doctor has_applied__this treatment_to__cancer. Ⅲ.单句改错导学号 49152517 1．Was it the cat which broke the window? _which→that__ 2．She finally put the hands on her lost keys. _the→her__ 3．I will treat you with lunch. _with→to__ 4．There is no doubt whether Liu Xiang can win. _whether→that__ 5．What the teacher said applies only with some of them.

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

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选修六unit5知识点。

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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