题目内容

根据句意及括号内的汉语提示写出所缺单词(每空1分,共10分)
1. I am a ­__________________(学生)in Yucai School.
2. Shanghai is a big __________________(城市).
3. There are _____________________(二十九)classes in our school.
4. My sister is a teacher in the ___________________(大学).
5. Wang Lin’s father is a doctor at the __________________(医院).
6. His sister is a _________________(秘书)at the factory.
7. There is an English-Chinese _____________(词典)on the desk.
8. Sam’s answer is ______________(正确的).
9. We often play sports in the _________________(体育馆).
10.There are some new ________________(建筑物)in our town.
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(8分)材料   苏云金芽孢杆菌生长到一定阶段,菌体内一端形成芽孢,另一端形成一种被称为伴孢晶体的蛋白质晶体。菌体破裂后释放出芽孢和伴孢晶体,伴孢晶体本身并无毒性,是毒素的前体。当昆虫吞食伴孢晶体后,在肠道内碱性环境条件和特定的蛋白酶的作用下,伴孢晶体变成毒素分子,能使小肠上皮细胞萎缩退化,昆虫停食,最后脱水死亡。科学家利用苏云金芽孢杆菌的这个特性,在实验室大量培养,制成生物农药,洒在农作物上,让害虫吃后中毒死亡。或利用基因工程技术,把苏云金芽孢杆菌的抗虫基因转到农作物体内,培育出抗虫品种。请根据上述材料回答下列问题:

(1)上图中,切断a处的工具酶是____________ ,切断b处的酶是             ______。
(2)作为目的基因载体的细菌质粒往往要带有一个抗生素抗性基因,该抗性基因在基因工程中主要用于_____________________________________________________。
(3)苏云金芽孢杆菌的抗虫基因导入棉花细胞是否表达,最简便的检测方法是________________________________________________。
(4)苏云金芽孢杆菌的抗虫基因转到农作物体内后,也能产生伴孢晶体蛋白,说明___________________________。
(5)转基因工程改良动植物品种,最突出的优点是_____________________________ 。
(6)大面积种植抗虫棉对该地区生态平衡会造成怎样的影响?                                                   
①________________                       _____________
②_____________________                          _____。
Mr. Brown was on his way home from the railway station. It was very late, and he was alone on the dark road. Suddenly he heard someone behind him. He began to walk faster. The man behind him walked faster, too. He walked more slowly, and the man moved more slowly, too. He began to run, and the man was following him and he was really scared.
There was a wall on one side of the road, and he quickly climbed up on it and jumped down on the other side. “If he passes and doesn’t stop,” Mr. Brown thought, “everything will be all right.” But the man didn’t pass. He climbed up on the wall and jumped down, too. Mr. Brown’s only thought was, “I’m in great danger!” He stood up and shouted, “What do you want? Why are you following me?”
The man was so tired that at first it was difficult for him to speak. “I didn’t know that you were a very good runner,” he said at last, “I have to go to Mr. White’s house, but I don’t know the way. A man at the station told me that you lived next to Mr. White’s and he told me to follow you. I’m too tired to go any farther (更远).”
(  ) 1. Mr. Brown came home from _____.
A. the police station                   B. the railway station
C. the hospital                       D. Mr. White’s house
(  ) 2. Mr. Brown was really _____.
A. in great danger               B. a policeman
C. afraid of the man            D. too tired to move
(  ) 3. The man followed Mr. Brown because _____.
A. he wanted to scare Mr. Brown         
B. he wanted to get some money from Mr. Brown
C. Mr. Brown lived next to Mr. White
D. Mr. Brown was one of his good friends
(  ) 4. The man was _____.
A. a thief                      B. a good runner
C. too tired to speak            D. very angry with Mr. Brown
(  ) 5. Which is wrong?
A. There were few people on the road.
B. The man didn’t know where Mr. White lived.
C. Mr. Brown thought he was in great danger.
D. Mr. Brown didn’t know where Mr. White lived.

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