乡村社会学的涵义_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题名词解释

乡村社会学的涵义

答案

参考答案：

乡村社会学是研究以农业或相关产业为主要经济活动、居住在乡村地区的人们组成的乡村社区为对象的社会学分支学科。乡村社会学也称农村社会学。

完形填空

It was an early morning in summer. In the streets, sleepy-eyed people were moving quickly, heading towards their    . This was the beginning of another      day in New York City.      this day was to be different.
Waiting     the crowded streets, on top of a       110 stories high, was Philippe Petit. This daring Frenchman was about to     a tightrope (绷索) between the two towers of the World Trade Center.
Philippe took his first      with great care. The wire held. Now he was     he could do it.     only a balancing pole, Philippe walked his way across, a      of 131 feet.
　Soon the rush-hour     began to notice. What a      ! There, 131 feet above the street, a      figure was walking on air.
　Philippe made seven      , back and forth (来回). He wasn't satisfied with just      . At times, he would turn, sit down, and     go on his knees. Once, he had the astonishing     to lie down on the thin thread. And thousands of      watchers stared with their hearts beating fast.
　After the forty-five-minute     , Philippe was taken to the police station. He was asked     he did it. Philippe shrugged (耸肩) and said, "When I see two tall buildings, I walk."

A．experiments

单项选择题

下列关于生物的遗传物质的叙述中，不正确的是（）

A.某一生物体内的遗传物质只能是DNA或RNA

B.除部分病毒外，生物的遗传物质都是DNA

C.绝大多数生物的遗传物质是DNA

D.生物细胞中DNA较多，所以DNA是主要的遗传物质