7．韩国首尔大学科学家将水置于一个足够强的电场中，在20℃时，水分子瞬间凝固形成了“暖冰”。下列关于“暖冰”的说法不正确的是　　　　　　　

　　　 A．“暖冰”也是水分子间通过氢键结合而成的固体

　　　 B．水凝固形成20℃时的“暖冰”所发生的变化是化学变化

　　　 C．形成20℃时的“暖冰”的变化是物理变化

　　　 D．在电场作用下，水分子间更易形成氢键，因而可以制得“暖冰”

6. 某常染色体隐性遗传病在人群中的发病率为1%，色盲在男性中的发病率为7%。现有一对表现正常的夫妇，妻子为该常染色体遗传病致病基因和色盲致病基因携带者。那么他们所生小孩同时患上述两种遗传病的概率是　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

A、1/88　　　　　　　　　　　 B、1/22　　　　　　 C、7/2200　　　　　　　 D、3/800

5. 长时间运动引起机体缺氧时，血液pH的变化趋势、引起pH变化的物质、能起缓冲作用的物质分别为

A、降低、CO₂、Na₂CO₃　　　　　　　　　　　 B、降低、乳酸、NaHCO₃

C、升高、CO₂、H₂CO₃　　 　　　　　D、升高、乳酸、NaHCO₃

4．下列关于生态系统信息传递特征的描述，正确的是

A、生态系统的物理信息都来源于环境　　　　 B、植物都通过化学物质传递信息

C、信息沿食物链从低营养级向高营养级传递　 D、信息可以调节生物种间关系

3. 假说-演绎法包括“提出问题、作出假设、验证假设、得出结论”四个基本环节，利用假说-演绎法，孟德尔发现了两个遗传规律。下列关于孟德尔研究过程的分析不正确的是

A、提出问题是建立在纯合亲本杂交和F₁自交两组豌豆遗传实验基础上

B、孟德尔所作假设的核心内容是“性状是由位于染色体上的基因控制的”

C、为了验证作出的假设是否正确，孟德尔设计并完成了测交实验

D、孟德尔成功的原因之一是选用豌豆作为实验材料

2. 下列关于叶绿体和光合作用的描述中，正确的是

A、叶片反射绿光故呈绿色，因此日光中绿光透过叶绿体的比例最小

B、叶绿体的类囊体膜上含有自身光合作用所需的各种色素

C、光照下叶绿体中的ATP主要是由光合作用合成的糖经有氧呼吸产生的

D、光合作用强烈时，暗反应过程直接将3个CO₂分子合成一个三碳化合物

1. 在保持细胞存活的条件下，蔗糖溶液浓度与萝卜条质量变化的关系如右图。若将处于b浓度溶液中的萝卜条移入a浓度溶液中，则该萝卜条的质量将

A、不变　　　　　　 B、减小　　 C、增大　 　 D、先增后减

3．作文中不得提及考生所在学校和本人姓名。

Nowadays it’s common for parents to bring much delicious food to their children at school.

____________________________________________________________________________________________________________________________________________________________________

One possible version:

　　 Nowadays it’s common for parents to bring much delicious food to their children at school.

Parents, teachers and students have different opinions. Many parents don’t think school food caters to their children’s taste. They think it their responsibility to satisfy their children’s needs. As for teachers, they understand what parents do for their children, yet the situation will bring about some problems, such as food safety.

　　 We students should be grateful to our parents for their selfless love. Of course, with parents preparing delicious food and helping do all the washing, we can eat properly and have more time to study. However, if we are always under the protection of our parents, we can’t develop our own ability to live independently.

　　 So I think we students should not only learn the book knowledge, but also learn to live independently, which will make a difference to our work and life in the future.

江苏省2010届英语看图作文专项练习9

上面两张照片被传到网上后，在全国引起轰动。两个普通环卫工人的事迹感动了中国。请简要描述这两张照片，并谈谈你的感想(至少两点)。文章的开头已经给出。

参考词汇：被水浸透的water-soaked　 要求：字数150左右。

Looking around us , we may surprisingly find that some people are not ordinary as we thought.　

One possible version:

　　 Looking around us , we may surprisingly find that some people are not ordinary as we thought.

On the afternoon of the first day of the Spring Festival, a female cleaner, leaning against the wall, taking off her water-soaked socks. They were their third pair that she had ever changed. In order to clean the snow on the road to make sure of the pedestrians' safety, she had worked for a whole day.

Every night always witnesses a grey-haired cleaner seated in the doorway of a shop. She is reading attentively by the light of the shop, lost to bitter cold and the noisy world. It is obvious that she wants to equip herself with knowledge to keep pace with the times of rapid development.

The two photos of average cleaners have moved China. How great Chinese cleaners are! They work hard but never complain, though they do tough jobs; they are thirsty for knowledge and have a noble mental world.

The two photos also have touched my heart. I will regard devotion as my goal in life, having more diligence and fewer complaints. Meanwhile, I appeal to the whole society to respect cleaners' labor, and to the government to improve their working and living conditions.

3.作文中不得提及考生所在学校和本人姓名。

This is a picture which describes vividly a kind of common phenomenon among some drivers in our country.

________________________________　 ▲ _____________________________________

This is a picture which describes vividly a kind of common phenomenon among some drivers in our country. In the picture, a drunk driver is caught speeding. He has drunk so much that he can’t walk normally. How can he drive a car in such bad condition?

It is well known that drunk driving has been the leading cause of road accidents, but some people still drive after drinking. What are the reasons for the phenomenon? The lack of safety awareness is the direct reason why there exists so much drunk driving. Besides, some people believe that drinking a little does no harm to their driving. If traffic accidents happen, it will be too late for them to regret what they have done.

　 Drunk driving is a great danger both to our society and to drivers. It is necessary to forbid drinking before driving. It’s time we took some measures to make a total ban on it. Firstly, we should reinforce the traffic security education to raise people’s awareness towards safety. Secondly, the government should make stricter laws about it and punish drunk drivers severely. Thirdly, we can make posters and signs warning people not to drive after drinking .

　 In my opinion , the approaches above should be followed and gradually spread out all over the country. Only in this way can people build up their self-conscience and pay enough attention to their daily driving. If we can keep on doing this, the road accidents will decrease soon in the future.

江苏省2010届英语看图作文专项练习8

下图反映了家长给孩子送饭的常见现象。对此，家长、老师、学生都有各自的看法。请根据下表所提示的信息，用英文写一篇短文。

注意：1．对所给要点逐一陈述，适当发挥，不要简单翻译。

2.词数150左右。开头已经写好，不计入总词数。