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Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. 'Avoid the rush-hour' must be the slogan of large cities the world over. Whenever you look, it's people, people, people. The streets are so crowded, there is hardly room to move when a bus arrives, it's so full, it can't take any more passengers. The extraordinary thing is not that people put up with (忍受,容忍) these conditions, but that they actually choose them in preference to anything else. Large modern cities are too big to control. They impose their own living conditions on the people who inhabit them. It is possible to live such an air conditioned existence in a large city that you are barely conscious of the seasons. What is going on in nature seems totally irrelevant. Even the distinction between day and night is lost. The funny thing about it all is that you pay dearly for the 'privilege' of living in a city. The demand for accommodation is so great that high rents must be paid for tiny flats which even country hens would scorn (拒绝接受;鄙视) to live in. Accommodation apart, the cost of living is very high. Just about everything you buy is likely to be more expensive than it would be in the country. In addition to all these, city inhabitants live under constant threats. The crime rate in most cities is very high. If you think about it, they're not really fit to live in at all. Can any one really doubt that the country is what man was born for and where he truly belongs? It can be learned from the first paragraph that .
A.
city inhabitants can not take buses in rush hours
B.
city inhabitants can not bear the traffic conditions of cities
C.
city inhabitants pay more attention to traffic conditions
D.
city inhabitants are willing to bear the crowded condition
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举一反三
【单选题】胞内结冰直接引起植物受害的原因是
A.
使原生质过度脱水
B.
冰晶体对细胞的机械损伤
C.
解冻过快对细胞的损伤
D.
对质膜与细胞器以及整个细胞质产生破坏作用
【单选题】某大学为了解在校本科生对参加某项社会实践活动的意向,拟采用分层抽样的方法,从该校四个年级的本科生中抽取一个容量为300的样本进行调查,已知该校一年级、二年级、三年级、四年级的本科生人数之比为4:5:5:6,则应从一年级本科生中抽取多少名学生
A.
55
B.
54
C.
60
D.
65
【单选题】“物竞天择,适者生存”说明了()的道理
A.
竞争
B.
合作
C.
战争
D.
斗争
【单选题】胞内结冰直接引起植物受害的原因是( )
A.
使原生质过度脱水
B.
冰晶体对细胞的机械损伤
C.
解冻过快对细胞的损伤
D.
对质膜与细胞器及整个细胞质产生破坏作用
【简答题】胞间结冰引起植物受害的主要原因是:(1) _______过度脱水,(2) _______对细胞的机械损伤,(3)解冻过快对_______的损伤。胞内结冰对细胞的危害更为直接,_______形成以及融化时对质膜与细胞器以及整个细胞质产生破坏作用。胞内结冰常给植物带来致命的损伤。
【单选题】磨削同轴度较高的台阶轴时,工件安装宜采用:
A.
双顶尖安装
B.
三爪卡盘安装
C.
虎钳安装
【单选题】胞内结冰直接引起植物受害的主要原因是______。
A.
使原生质过度脱水
B.
解冻过快对细胞的损伤
C.
胞间隙冰晶体对细胞质的机械损伤
D.
冰晶体对生物膜、细胞器及细胞质的结构产生机械损害
【单选题】车轴端面时,若刀件与工件中心不等高,则
A.
不能工作
B.
工件中心会留下凸台
C.
产生振动
D.
工件会偏心
【单选题】跨栏运动由于需要腘绳肌频繁的交替收缩和舒张,因此跨栏运动员的职业伤病是( )。
A.
腘绳肌拉伤
B.
坐骨结节末端病
C.
椎板疲劳性骨折
D.
髌腱炎
【简答题】比赛中身体的任何部位都可以击球。()
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