31.下图表示人体内某些物质的转化过程.请回答下列问题: ①蛋白质分子经a过程形成氨基酸时.所消耗的水中的氢参与形成氨基酸 的 . ②b过程进行时必须首先发生的物质变化过程是 作用.当人体血糖浓度降低时.胰岛中的某种细胞产生的 可以促进b过程的进行. ③上图中 过程形成的氨基酸一定是非必需氨基酸. ④d过程进行的场所在细胞内的 上.此时氨基酸的排列顺序直接由 来决定. 棉花的纤维有白色的.也有紫色的,植株有抗虫的.也有不抗虫的.为鉴别有关性状的显隐性关系.有人做了以下两组杂交试验.结果如下表.(假定控制两对性状的基因独立遗传,颜色和抗虫与否的基因可分别用A.a和B.b表示).请分析回答: 组合序号 杂交组合 子代的表现型和植株数目 紫色不抗虫 紫色抗虫 白色不抗虫 白色抗虫 1 白色不抗虫(甲)×紫色不抗虫 753 251 762 248 2 白色不抗虫(乙)×紫色抗虫 0 0 1508 1529 ①上述两对性状中. 是显性性状. ②杂交组合1的子代中出现白色抗虫和紫色抗虫植株的原因是 . ③杂交组合1的子代中白色不抗虫植株的基因型是 . ④若要利用亲本中的棉花品种获得可稳定遗传的白色抗虫棉.最简单的方法是: . ⑤已知题中所给杂交组合1.2的亲本中A的基因频率为40%.若它们的子一代中所有个体全部存活无一被淘汰.则该子一代群体中a的基因频率是 . 查看更多

 

题目列表(包括答案和解析)

句子翻译请根据中文及括号内的要求翻译下列句子

(共5题; 每小题4分, 满分20分)

1.威廉向那位女士鞠了一躬,送给她一个盒子,里面是一枚漂亮的真钻石戒指。(用定语从句)

2.大部分证据都被毁了。因此,不可能证明这种药物是有害的。(thus)

3.他善于交流,所以在工作中他和各种人打交道都应付自如。(gift; mix; manage)

4.是什么事使他不能参加我们的会议仍然是个谜。(含形式主语;        prevent…from)

5.问题在于,人们怎样才能找到一种有效的方式来储存太阳的热量。 (表语从句)

 

查看答案和解析>>

根据所给汉语,写出单词正确形式(每小题2分,共20分)

1.I know you don’t like her but try not to make it so o__________ (明显的).

2.The hotel offers its guests a wide v______ (种类) of amusements.

3.The v________ (志愿者) for community service are doing a good job.

4.He s_________ (受苦) a lot when he was a child.

5.Today there are about 5,000 e_______(濒危) animals and at least one species dies out every year.

6.We are g________ (感激的) to you for your timely help.

7.They r________ (与......相似) each other in shape but not in color.

8.We want to make our products a________ (可获得的) to a wider market.

9.The s________ (斗争) for independence was long and hard.

10.While I was working as a waiter last month, my friend was l_____ (躺) on the beach.

 

查看答案和解析>>

短语考查 (共10小题,满分20分)

1.The Student’s Union ________ ________all students to donate money to the disaster-hit area. (呼吁)

2.When the girl saw the snake, she _________ ________ a scream. (发出)

3.The whole meal was good and the wine _______ ___________ was excellent.  (尤其)

4.Most of the social problems were ________ ________ human errors. (由于)

5.You should ________ ________ ______ tell such lies. (感到羞耻)

6.Students are suggested ________ ______ their strength through physical exercise.(逐步增强)

7.It’s my honour to receive the prize ______ ________ ______ all the volunteers. (代表)

8.He is accustomed to g________ ________ the headlines of the daily paper at breakfast.(浏览)

9.The team slowly ________ ______ ______ back to the training base. (返回)

10.I ______ ______ ______ ring him when he called back. (正要)

 

查看答案和解析>>

语境填词, 注意动词形式。(每空1分,满分20分)

1.We must make _______(安排,筹备)for the wedding.

2.The new law f_________ smoking in offices.

3.This type of university course is no longer_________(有关的) to today’s problem.

4.He failed to _________(获得) a scholarship.

5.As soon as he saw the letter, he ______ (承认) that he had written it.

6.I am sorry to ___(打扰)you, but can you tell me the way to the nearest supermarket?

7.We still _______(欠) the garage $50 for those repairs.

8.He found it hard to __________(适应) to working at night.

9.It is _______(显然的) from her accent that she is from the north of China.

10.There were more than 50 a_________ for the job, but only 10 were employed.                    

11.The ___________(大多数) of representatives are in favor of the plan, only a few are against it.

12.He was _____(雇佣) three years ago and he is content with the job in the company.

13.Research ____________(暗示) that eating habits are related to health.

14. His telephone is out of service. Is there any other ______(方式)of contacting him?

15.I take _________(安慰) from the fact that his friends are there to help him.

16.The country is a___________ in natural resources.

17.She u____________ the responsibility for the changes.

18.The teacher _____________(建议) the students to read the following books.

19.The railway lines run p___________ to the road, so they will never meet.

20.Clothes and blankets have been ________(分配,分发) among the flood victims.

 

查看答案和解析>>

书面表达(满分20分)

人人都想成功,但是生活中失败却不可避免。作为一名高中生,我们该如何看待失败?请结合以下提示用英语写一篇短文。

 

失败的积极意义

1. 有助于认识自身优缺点

2. 促进自我提高

3. ……

 

应对失败的措施

1. 勇敢面对

2. 分析原因

3. ……

自我感受

……

注意:

1、字数150左右。开头已写好,不计入总词数。

2、对所有要点逐一陈述,适当发挥,不要逐句翻译。

All of us experience failure and are afraid of it. However, every coin has two sides.____

___________________________________________________________________________

 

查看答案和解析>>


同步练习册答案