问题 单项选择题

作物生产系统,是一个作物—环境—社会相互交织的复杂系统,作物生产的高产、优质和高效通常又是矛盾的和难以协调统一的整体,而且,高产、优质和高效三者的主次关系也会随着社会经济的发展而变化,可见农学学科的研究对象不仅涉及自然因素,而且涉及了社会因素。
这段文字意在说明( )。

A.农学学科的研究对象既涉及自然因素又涉及了社会因素
B.作物生产系统是一个作物—环境—社会相互交纵的复杂系统
C.农学是服务于作物生产的一门综合学科
D.必须以系统学的观点来认识农学和作物生产

答案

参考答案:A

解析: 意图推断题。文段最后一句“可见农学学科的研究对象……”是文段主旨所在,故选A项。

阅读理解

阅读理解

     It was a strange noise that made the man stop his car soon after he left a village for London. He got out of the

car and looked at the wheels (车轮) carefully. He found nothing wrong, so he went on.

     The noise began again. The man turned his head quickly and saw a great black cloud behind the car. When he

stopped at a village, people told him that it must be a queen bee (蜂王)in his car as there were thousands of bees

nearby. So he drove away very quickly and thought it would be the best way to escape(逃跑). After one hour's

hard driving,  he arrived in London.

     He stopped his car in front of a hotel and went in. Soon a man hurried in to tell him that his car was covered

with bees. The poor, man rang up the police and explained what had happened.

     The police decided to call a bee-keeper. In a short time, the bee-keeper arrived. He took the queen bee and the

other bees home in a large box. The man was glad.

1. The story happened         .

A. on the way to a village

B. on the way to London

C. when the man was driving his car

D. when the man found nothing wrong

2. When the man turned his head quickly he saw       .

A. a great black cloud in the sky

B. something large and black

C. a strange noise

D. people in a village

3. When the man drove away very quickly the bees         .

A. flew away

B. flew into the car

C. flew behind the car

D. flew to the bee-keeper's box

4. As soon as he stopped his car in front of a hotel in London, the man           .

A. found the bees

B. told a servant to ring up the police

C. rang up the police

D. went into the hotel

5. After the bee-keeper arrived, he               .

A. took the queen and the other bees with him

B. bought a large box to keep the bees

C. drove the bees away without any trouble

D. killed all the bees in a few -minutes

单项选择题