题目内容
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 the earth. Light gets through, and this is necessary for plants to make the food which we eat. Heat, too, makes our environment suitable to live. 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.
49.According to the first paragraph, the atmosphere is necessary to man because of the following reason EXCEPT________
A.protecting him against the harmful rays from space
B.providing sufficient light for plant growth
C.suppling the heat necessary for human survival
D.screening off the falling meteors
50.We learn from the passage that ________
A.exposure to even tiny amounts of radiation is fatal
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
51.The harm radiation that has been done to the Apollo crew members ________
A.is insignificant B.is enormous C.seems overestimated D.remains unknown
52.It can be inferred from the passage that________
A.the Apollo mission was very successful
B.the protection from space radiation is no easy job
C.astronauts may possibly have deformed children or grandchildren
D.radiation is not a threat to well-protected space explorers
53.Which of the following is TRUE?
A.Space is dangerous only because of meteors.
B.Explorers in space have to avoid the damage from radiation
C.We have got effective ways to treat illnesses caused by radiation.
D.The atmosphere doesn’t screen off radiation
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 (厨房用具) for 4 families affected by emergencies.
Rs. 5,000 can provide education kits and uniforms for 5 under-privileged (贫困的) 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 (免税证明) within 12 days of making a donation.
【小题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. |
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 |
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. |