问题 单项选择题 A1/A2型题

对病毒体最正确的叙述是()

A.有感染性的病毒颗粒

B.脱壳后仍有感染性的病毒核酸

C.有刺突的包膜病毒颗粒

D.可独立存在于细胞外的病毒颗粒

E.成熟的、完整的、具有感染性的病毒颗粒

答案

参考答案:E

解析:病毒体是成熟的、完整的、具有感染性的病毒颗粒。

阅读理解

阅读理解。

    Happy Valley (欢乐谷) is a wonderful place full of fun. On June 6, Wang Wei had a good time there with

her classmates.

    They all wanted to ride "Space Shot (太空梭)" first. It could send people 60 meters into the air quickly.

It was so exciting. But there were so many people, so they had to wait.

     "Three, two, one. Go!" Wang Wei went up into the air. When she opened her eyes, she had a whole view

of the large Happy Valley. It was so exciting! Thirty seconds (秒) later they were back to the ground. How

happy they were!

     Then they went to Gold Mine (金矿) Town and traveled on the Gold Mine Train. There was great

excitement on the train when it started moving.

     They also took part in some English activities after the rides. Through the activities, Wang Wei improved

her English a lot. She could introduce (介绍) Happy Valley to foreigners in English.

     "Happy Valley is a really exciting and interesting place. I hope I can go there again," Wang Wei said.

1. What is Happy Valley? [ ]

A. It's a town.

B. It's a zoo.

C. It's a park.

D. It's a train station.

2. How long did it take Wang Wei to be back to the ground by Space Shot? [ ]

A. An hour.

B. 30 minutes.

C. 15 minutes.

D. Half a minute.

3. How did Wang Wei travel around Gold Mine Town? [ ]

A. On foot.

B. By bike.

C. By bus.

D. By train.

4. Why did Wang Wei and her classmates take part in the English activities? [ ]

A. They wanted to have a good rest.

B. They wanted to improve their English.

C. They wanted to introduce themselves there.

D. They wanted to play games with some foreigners.

5. Which of the following is NOT true according to the passage? [ ]

A. Wang Wei visited the whole Happy Valley that day.

B. There are many interesting things in Gold Mine Town.

C. Wang Wei closed her eyes at first when she was on Space Shot.

D. People can see the whole Happy Valley on Space Shot.

单项选择题