从染色体组成看，正常男性产生的精子类型及其染色体组成分别是（ ） A．两种22对

关于工程施工承包合同中确定变更工作费率(单价)或价格程序，下列说法不正确的是()。

A．如咨询工程师认为适当，应以合同中规定的费率和价格进行变更工作的估价

B．如合同中未包括适用于该变更工作的费率和价格，则应在合理的范围内使用合同中的费率和价格作为估价的基础

C．如咨询工程师认为合同中没有适用于该变更工作的费率和价格，则在与业主和承包商进行协商后，由业主确定合适的费率和价格

D．如双方在协商后未达成一致意见，则咨询工程师应确定他认为适当的费率和价格，并相应地通知承包商，同时将一份副本呈交业主

按时提交承诺函且无重大事项发生的，中国证监会安排发行；未能按时提交承诺函或有重大事项发生的，中国证监会暂缓安排发行。( )

1992年邓 * * 《在武昌、深圳、珠海、上海等地的谈话要点》中说：“……从一定意义上说，某种暂时复辟也是难以避免的规律性现象。一些国家出现严重挫折，社会主义好像被削弱了，但人民经受了煅炼，从中吸取教训，将社会主义向着更加健康的方向发展。”对上述材料理解错误的是  [ ]

A、东欧剧变、苏联解体是邓 * * 谈话的国际大背景　

B、东欧剧变、苏联解体是必然的，是件好事

C、社会主义运动受到挫折，但并不意味着失败

D、国际社会主义力量从挫折中吸取教训，向更加健康的方向发展

阅读理解。

     Plants are very important living things. Life could not go on if there were no plants. This is because plants

can make food from air, water and sunlight. Animals and man cannot make food from air, water and sunlight.

Animals get their food by eating plants and other animals. Therefore animals and man need plants in order to

live. This is why we find that there are so many plants around us. If you look carefully at the plants around

you, you will find that there are two kinds of plants: flowering plants and non-flowering plants. Flowering

plants can make seeds. The seeds are protected by the fruits. Some fruits have one seed, some have two,

three or four, and some have many seeds. But a few fruits have no seeds at all. An example of a fruit without

seeds is the banana fruit. Most non-flowering plants do not grow from seeds. They grow from spores (胚芽).

Spores are very small. Some spores are so small and light that they can float in the air. We may say that spores

are quite the same as seeds. When these spores are all on wet and shady places, they usually grow into new

plants.

1. The main idea of the first paragraph is that _____. [ ]

A. plants are important for life

B. plants cannot grow without air

C. there are many plants in the world

D. we can not live without water

2. Plants can make food from _____. [ ]

A. flower, water and air

B. water, sunlight and air

C. air, water and soil

D. air, sun and light

3. What can we infer (推断) from the passage? [ ]

A. Of all living things animals are most important

B. Spores are seeds

C. All fruits of flowering plants have seeds

D. Without plants, man will die out

4. This passage may be taken from _____. [ ]

A. a medicine book

B. a novel

C. a science magazine

D. an experiment report

农业是国民经济的基础，这是因为()。

A．农业为全国人民提供最基本的生活资料

B．农业为工业发展提供原料和市场

C．农业是劳动力和资金积累的重要来源

D．农业的发展情况，关系着社会的稳定