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 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 crew accumulated a large amount of rems. So far, no dangerous amounts of radiation have been reported, but 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 a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

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

A. it protects him against the harmful rays from space    

B. it provides sufficient light for plant growth

C. it supplies the heat necessary for human survival      

D. it screens off the falling meteors

2. It can be inferred from the passage that ________.

A. the Apollo mission was very successful        

B. protection from space radiation is no easy job

C. astronauts will have deformed children or grandchildren

D. radiation is not a threat to well-protected space explorers

3. The best title for this passage would be ________.

A. The Atmosphere and Our Environment   B. Research on Radiation.

C. Effects of Space Radiation             D. Importance of Protection Against Radiation

 ABC

【解析】1．從第二句 “The atmosphere again acts as our protective blanket on earth.” 可知。

2．邏輯推理。根據(jù)短文所列的種種事例，可知防輻射是件困難的工作。

3．寫標(biāo)題，綜合一、二兩段文字可得知本文主要講述太空輻射的影響。因此選C。 

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：

單詞拼寫：用所學(xué)的單詞完成句子意思，單詞首字母或中文意思已給出。

F_________ is the mother of success.

They are w_________ to each other; obviously they don’t want to be heard by others.

It has been reported that in the United States that many environment— protecting              (協(xié)會(huì)) have been formed.

The doctor d_________ three babies every day on average at that time

China’s sending a person into space is a great a_____________.

The bar seemed to him to be full of people and he felt that the people were observing him                .(好奇地)

If you want to learn a foreign language well, you should o__________ many difficulties.

You can e___________ your ideas with your classmates when you’re discussing.

They go into the church,            (打招呼) everyone they meet.

I was filled with              (怒火) when I saw him kicking the dog.

查看答案和解析>>

科目：高中英語 來源：2012-2013學(xué)年江蘇省揚(yáng)州中學(xué)高二12月月考英語試卷（帶解析） 題型：閱讀理解

Save the Children is the world’s leading independent organization for children that works to inspire breakthroughs in the way the world treats children to achieve immediate and lasting change in their lives. Our founder Eglantyne Jebb drafted the “Declaration of the Rights of the Child” in 1922 which was adopted by the League of Nations in 1924.
Save the Children works to bring about a world in which every child attains the right to survival, protection, development and participation.
Our Approach:
Save the Children actively works with the communities, the State governments and the national government to bring lasting changes for children by:
Providing them with immunisation (免疫) and nutrition.
Ensuring that they have a chance to join formal school.
Exposing and preventing exploitative child labour practices and running prevention programs.
During emergencies, we provide emergency supplies as well to ensure that children are protected in safe places as well to continue schooling.
We cannot do this without your support. Please contribute by choosing an amount below.
Rs. 20,000 can provide Child Friendly Space for 50 children ensuring that they receive Psycho-Social and Educational support.
Rs. 10,000 can provide hygiene kits and house-hold cooking utensils (廚房用具) for 4 families affected by emergencies.
Rs. 5,000 can provide education kits and uniforms for 5 under-privileged (貧困的) children who have lost belongings in an emergency.
Rs. 2,500 can provide a hygiene kits and house-hold cooking utensils for a family during an emergency.
You will receive your Tax Exemption Certificate (免稅證明) within 12 days of making a donation.
【小題1】What is the main purpose of writing the passage?

A．To introduce the organization to readers.
B．To raise awareness of children’s living conditions.
C．To draw public attention to educating children.
D．To persuade more people to donate to the organization.
【小題2】Save the Children is an organization ______.
A．founded in 1922 by Eglantyne Jebb
B．joining the League of Nations in 1924
C．only cooperating with the local government
D．concerning children’s physical and mental health
【小題3】Which of the following is TRUE according to the passage?
A．Save the Children will provide cooking utensils for 4 families with a 2500 RS donation.
B．Providing help during emergencies is a most important part of the work of Save the Children.
C．Save the Children will reply to donors within 12 days of making their donation.
D．Child Friendly Space is a formal school for children to receive social and psychological education.

查看答案和解析>>

科目：高中英語 來源：河南省2009-2010學(xué)年高二校內(nèi)競賽試題（英語） 題型：閱讀理解

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（可忍受的）. Various kinds of rays come through the air from outer space, but enormous quantities of radiation（輻射） 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 no be discovered until the birth of abnormal children or even grandchildren.

Missions of the Apollo flights have had to cross belts of high amount of rems. So far, no dangerous amounts of radiation have been reported, but 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 a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.

1. According to the first paragraph, the atmosphere is essential to man in that ____.

A. it protects him against the harmful rays from space

B. it provides sufficient light for plant growth

C. it supplies the heat necessary for human survival

D. it screens off the falling meteors

2. We know from the passage that ____.

A. exposure to even tiny amounts of radiation is deadly

B. the effect of exposure to radiation is slow in coming

C. radiation is avoidable in space exploration

D. astronauts in spacesuits needn't worry about radiation damage

3. The harm radiation has done to the Apollo crew members ____

A. is significant            B. seems overestimated

C. is enormous             D. remains unknown

4. It can be inferred from the passage that ____.

A. the Apollo mission was very successful

B. protection from space radiation is no easy job

C. astronauts will have deformed children or grandchildren

D. radiation is not a threat to well-protected space explorers

45. The best title for this passage would be ____.

A. The Atmosphere and Our Environment   B. Research on Radiation

C. Effects of Space Radiation             D. Importance of Protection Against Radiation

 

查看答案和解析>>

科目：高中英語 來源：2010-2011學(xué)年浙江省杭州市高二上學(xué)期10月月考英語卷 題型：單詞拼寫

單詞拼寫：用所學(xué)的單詞完成句子意思，單詞首字母或中文意思已給出（10分）。

1.F_________ is the mother of success.

2.They are w_________ to each other; obviously they don’t want to be heard by others.

3.It has been reported that in the United States that many environment— protecting              (協(xié)會(huì)) have been formed.

4.The doctor d_________ three babies every day on average at that time

5.China’s sending a person into space is a great a_____________.

6.The bar seemed to him to be full of people and he felt that the people were observing him                .(好奇地)

7.If you want to learn a foreign language well, you should o__________ many difficulties.

8.You can e___________ your ideas with your classmates when you’re discussing.

9.They go into the church,            (打招呼) everyone they meet.

10.I was filled with              (怒火) when I saw him kicking the dog.

 

查看答案和解析>>

同步練習(xí)冊(cè)答案