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提问人：网友panyikun 发布时间：2022-01-07
[主观题]

There are some kinds of rays from the sun which would burn us to death if we were notThere

are some kinds of rays from the sun which would burn us to death if we were not protected from them. 太阳中有些光线射到我们身上会把我们烧死，如果我们不防备的话。（）

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更多“There are some kinds of rays from the sun which would burn us to death if we were notThere”相关的问题
第1题
Space is a dangerous place, not only because of meteors (流星), but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential, for plants to make the food which we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation (辐射) from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.

Radiation is the greatest known danger to explorers in space. The unit of radiation is called "rem". Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage — a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed (畸形的) children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in space laboratory. Rugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

According to the first paragraph, the atmosphere is essential to man in that it ______.

A．protects him against the harmful rays from space

B．provides sufficient light for plant growth

C．supplies the heat necessary for human survival

D．screens off the falling meteors

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第2题
Included _____.ll kinds of books B.wsll kinds of booksC.werell kinds of books D.ll kinds ofIncluded _____.ll kinds of books B.wsll kinds of books C.werell kinds of books D.ll kinds of booksre
A．all kinds of books

B．was all kinds of books

C．were all kinds of books

D．all kinds of books are

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第3题
We entered the shop, and a saleswoman greeted us, and all kinds of shoes were on the shelves, and the prices were quite reasonable, and a lot of customers were buying them.()
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第4题
请根据文字描述编发WW电码____():观测时有间歇性中雪
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第5题
I know he hsn’t finished the work, but _________, he hs done his best.tllB.inllC.fterllDI know he hsn’t finished the work, but _________, he hs done his best.tll B.inll C.fterll D.bovell
A．at all

B．in all

C．after all

D．above all

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第6题
Wht cn NOT be inferred from George Gilhooley’s letters He hs not done very well in thWht cn NOT be inferred from George Gilhooley’s letters He hs not done very well in the mjor lerningt college. B．He hs no working experience. C．He grduted from college with mster degree. D．He is full of confidence in getting the position.

A．He has not done very well in the major learning at collE

B．He has no working experience

C．He graduated from college with a master degree

D．He is full of confidence in getting the position．

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第7题
What I am trying to say is that in my opinion he has not done his work very well and it needs improving.()
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第8题
There are a number of students who want to join the drama club.()
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