下列各项属于生物的是 A．正在跳舞的机器人 B．墙壁上的青_爱下问搜题

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问题选择题

下列各项属于生物的是

A．正在跳舞的机器人

B．墙壁上的青苔

C．慢慢长大的钟乳石　　　　　　　

D．千姿百态的珊瑚树

答案

答案：B

题目分析：生物具有以下特征：1、生物的生活需要营养，2、生物能够进行呼吸，3、生物能排出体内产生的废物，4、生物能够对外界刺激作出反应，5、生物能够生长和繁殖，6、除病毒外，生物都是由细胞构成的，A.机器人、C. 钟乳石、D.珊瑚树不具有这些特征，所以不属于生物，B.青苔具有这些特征，所以属于生物。

完形填空

Most young people 21 some form of 22 activity. It may be walking, cycling,or swimming, or in winter, skating, or skiing. It may be a game of some kind—football, hockey, golf or tennis. It may be mountaineering. (登山运动) Those who have a 23 for climbing high and difficult mountains are often 24 with astonishment. Why are men and women willing to 25 cold and hardship, and to take 26 on high mountains? This astonishment is caused, probably, by the 27 between mountaineering and other forms of activity 28 which men 29 their leisure (空闲的) time. Mountaineering is a sport and not a game. There are no manmade rules, 30 there are for such games as golf and football. There are, 31 rules of a different kind which would be dangerous to ignore, but it is this freedom from manmade rules 32 makes mountaineering 33 to many people. Those who climb mountains are 34 to use their own methods. If we compare mountaineering and other more familiar sports we might think that one big difference is that mountaineering is not a “team game” .We should be mistaken in this. There are , it is true, no “matches” between “teams” of climbers but when climbers are on a rock face 35 by a rope 36 which their lives may depend, there is obviously teamwork. The mountain climber knows that he may have to fight forces that are stronger and more powerful than man. He has to fight the forces of nature. His sport requires high mental and physical 37. A mountain climber continues to improve in skill year after year. A skier is probably past his best by the age of thirty, and most international tennis 38 are in their early twenties. 39 it is not unusual for men of fifty or sixty to climb the highest mountains in the Alps. They may take more time than younger men, but they probably climb with more skills and less waste of effort, and they certainly 40 equal enjoyment.

A．looked down

C．looked upon

D．looked round

D．relationship

判断题

钢筋进场时，应按批号及直径分批验收。