说明：本试卷共8页， 共7大题，全卷共100分。
竞赛时间为90分钟。
用黑色（蓝色）钢笔（圆珠笔）答在答题卷所规定的位置上。
注意事项：
1.考生务必将自己的姓名、考号、辅导教师姓名、班别、学校写在密封线以内相应的位置上。
2.考生务必用黑色钢笔（圆珠笔），将答案写在答题卷相应的位置上, 答在试题卷上无效。
一、单词拼写
根据下列句子中所给出的首字母或汉语提示, 写出以下单词，并将答案填写在答题卷上相应的位置。(共10小题；每小题1分，满分10分)
1. He thinks (收集) stamps is fun and very interesting.
2. They have given each other advice and s many happy moments of their experiences.
3. When telephone became c , they often phoned each other.
4. His inability to speak English puts him at a (不利的条件) when he
attends international conferences.
5. Nowadays more and more people have enough money to live a c life.
6. I’m not f__________ with the city, for this is my first visit here.
7.Once you are in the lab, you must follow your teacher’s __________ (指导).
8. As teenagers, you shouldn’t get into the h__________ of sleeping in.
9.If you want to sell your sofa, why not put an ___________ (广告) in the local paper?
10. History, as well as biology, can tell us the o__________ of life on earth.
二、语法填空(共10小题；每小题1分，满分10分)
阅读下面短文，根据上下文填入适当的词语，或使用括号中的词语的适当形式填空，并将答案填写在答题卷上相应的位置。
Maria and Paul were making their favorite dinner, macaroni and cheese. The pot of water
(11) (begin) to boil on the stove when She reached for the salt, with her eyes were on the recipe.
“Ow!” she shrieked (尖叫). Her hand had hit the edge of the pot. She started to run for the first-aid cream. “Wait!” Paul shouted. “Use this (12) .” He reached for a plant on the window sill. He quickly tore off a little piece. He squeezed the juice onto Maria’s (13)
finger.
In a few seconds, the pain stopped . There was no blister. There was only a little red spot. The “magic” plant was an aloe. Paul remembered (14) his grandmother had told him about this instant cure for burns. Grandmother had told him about (15) plants from Mexico, too. There were plants to use for sores and bites and coughs and fevers. Growing certain plants could be like having a special medicine chest!
By (16) 1750s, the Native Americans’ way of life had been changed by Europeans. Some things (17) were brought to America, such as deadly diseases, were not good. Other changes helped improve life for the Native Americans.
The Native Americans started to use iron kettles and steel knives, rather than use tools of stones and bones. They had before used only dogs (18) work animals. Now they had horses. They learned to raise horses as well as chickens and sheep. From sheep’s wool, some tribes wove beautiful rugs with special designs.
The Native Americans began to need their new neighbours. They wanted to trade furs to get better tools. Most of them stopped (19) their own pottery and tools. These arts were no longer passed on from parents to (20) . Soon the young workers had forgotten the old ways.
Many Native Americans did not want the settlers moving father into their lands. But they had learned to want the settlers’ supplies.
三、阅读理解： (共12小题；每小题2分，满分24分)
阅读下列短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
A
Agricultural scientists in the United States have put a copy of a human gene into pigs, sheep and rabbits. They report that the gene seems to be working in some of the animals. The gene that the scientists are using controls the production of human growth hormone (荷尔蒙)，a chemical necessary for growth.
They are using the human gene because it has been more closely studied than any other growth gene. The scientists hope their work will someday result in food animals that grow faster and larger or produce more milk or eggs. The research is being done by scientists at the University of Pennsylvania, the University of Washington and the United States Department of agriculture. The scientists put copies of human growth hormone into the fertilized eggs of the female animals. When baby animals were born from the eggs, the scientists looked for evidence that the human gene had become part of the animal’s genetic material. They examined almost 200 baby pigs and found the gene in 20 of them. They found it in 28 of more than 200 rabbits, but it was in only one of 73 baby sheep. The scientists said they found the human growth chemical produced by the gene in some of the animals.
It is too soon to know if the animals will pass the transplanted human growth gene to their young, proving that the gene has become permanent (永久的) part of their genetic material. Similar research with mice two years ago produced a new kind of mouse that is two times larger than normal. The scientists hope the same thing will happen with farm animals. They say their research will permit other gene transplants that can give animals defense against diseases, or let them live in very hot or very cold places. American farmers already use chemical hormones to increase the size of cattle and the amount of milk they produce. But they have to put the hormones into the cows. If the gene transplants are fully successful, the cow’s body will produce growth hormone.
21. Where did the scientists put copies of human growth hormone into?
A. All kinds of animals.
B. Pigs, sheep and dogs.
C. Both male and female animals.
D. The fertilized eggs of the pigs, sheep and rabbits.
22. What did the scientists expect from their research?
A. The growth gene will make the new farm animals look like their parents and the animals will produce