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外语
At the first sight the planet Mars does not appear very welcoming to 【S1】______. any kind of life. It has very little oxyg
At the first sight the planet Mars does not appear very welcoming to 【S1】______. any kind of life. It has very little oxyg
admin
2010-08-21
69
问题
At the first sight the planet Mars does not appear very welcoming to 【S1】______.
any kind of life. It has very little oxygen and water, the temperature at
night is below -50 degrees and winds of 100 miles per hour cause severe
dusty storms. However, the surface of the planet seems to show that 【S2】______.
water flowed across at some time in the past, and it is believed that there 【S3】______.
is enough ice at the poles to cover the planet with water if il melts. 【S4】______.
Although there is no life on Mars. some scientists think that there may
have some form of life a long time ago. At that time, the planet had active 【S5】______.
volcanoes; the atmosphere was thinner and warmer; and there was water. 【S6】______.
In fact, in some ways Mars may have been different to earth, where life 【S7】______.
exists.
Some people believe that Mars could support life in the future if the
right conditions were produced. The first step would be to warm the
planet used certain gases which trap the sun’s heat in the planet’s 【S8】______.
atmosphere. By warmth, water and carbon dioxide, simple plants could 【S9】______.
begin to grow, These plants could slowly make Mars habitable. It is
established that the whole process might spend between 100,000 and 200,000 【S10】______.
years. In the meantime, people could begin to live on the planet in special
closed environments. They would provide a lot of useful information about
conditions on Mars and the problems connected with living there.
【S2】
选项
答案
dusty→dust
解析
在没有同根形容词的情况下,很多名词都可以用作定语,作用和形容词差不多,试比较:food industry 和 chemical industry,cotton production 和 agricultural production。如果有同根形容词,还是用形容词作定语较好,有时两者都可以用作定语,但意义上有些差别,例如:gold reserve(黄金储备),golden sunshine(金色的阳光);rain drops(雨点);rainy season(雨季);color film(彩色影片)。此处dust storm意为“尘暴”,指基本成分是dust,而不是“似粉状的”。
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0
大学英语六级
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