更多"阅读短文，回答问题。
美国科学家在研究了火星岩石分析结果后认为，火"的相关试题:
[单项选择]
阅读短文，回答问题。
美国科学家在研究了火星岩石分析结果后认为，火星上的岩石构成与地球岩石相似。据外国通讯社报道，参与“火星探路者”科研项目的美国田纳西大学的科学家哈普·麦克斯温8日在美国国家航空航天局喷气推进实验室举行的新闻发布会上说，该飞船释放的火星车“旅居者”(前译“索杰纳”)对飞船着陆点附近的一块岩石的分析结果表明，这块岩石的主要成分是由类似于地球上常见的石英、长石和正辉石组成的，其中石英约占1/3。麦克斯温说，“旅居者”上的仪器不能直接测出石英，但它测出了大量硅元素。科学家分析，硅元素肯定是以石英的形式存在的。因为地球上的岩石如果硅含量达到这么大就一定含有石英。分析结果还证实，在地球上已发现12块火星陨石确实来自火星。这12块陨石中有一块编号为ALH80041，是在美国阿拉斯加发现的。
下列说法符合文章原意的一项是（）。
A. 火星岩石的主要成分中含有大量的石英，这是由火星车上的仪器直接测出的
B. 科学家认为火星岩石含有石英是因为“旅居者”上的仪器测出了具备一定石英含量的硅元素
C. “旅居者”上的仪器并未直接测出火星岩石有石英，因此，说火星岩石主要成分与地球岩石成分类似，是没有科学根据的
D. 分析结果证实火星陨石并不含有石英
[单项选择]阅读短文，回答题。
美国科学家在研究了火星岩石分析结果后认为，火星上的岩石构成与地球岩石相似。据外国通讯社报道，参与“火星探路者”科研项目的美国田纳西大学的科学家哈普·麦克斯温8日在美国国家航空航天局喷气推进实验室举行的新闻发布会上说，该飞船释放的火星车“旅居者”(前译“索杰纳”)对飞船着陆点附近的一块岩石的分析结果表明，这块岩石的主要成分是由类似于地球上常见的石英、长石和正辉石组成的，其中石英约占1/3。麦克斯温说，“旅居者”上的仪器不能直接测出石英，但它测出了大量硅元素。科学家分析，硅元素肯定是以石英的形式存在的。因为地球上的岩石如果硅含量达到这么大就一定含有石英。分析结果还证实，在地球上已发现12块火星陨石确实来自火星。这12块陨石中有一块编号为ALH80041，是在美国阿拉斯加发现的。
美国科学家的研究结果认为“火星上的岩石构成与地球岩石相似”。得出这一结论的依据判断正确的一项是( )。
A. 火星车“旅居者”在火星着陆点附近发现一块岩石
B. 对飞船着陆点附近的一块岩石分析表明，该岩石的构成成分与地球岩石构成成分完全相同
C. 飞船着陆点附近的一块岩石的成分是由类似于地球上常见的石英、长石和正辉石组成的，其中石英约占1/3
D. 飞船着陆点附近的一块岩石的主要成分和地球岩石的成分类似，这一结论是经过分析得出的
[单项选择]
下面有篇短文，每篇短文后有道题，每题后面有个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。
{{B}}第一篇{{/B}}
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Silence Please
If there
is one group of workers across the Western world who will be glad that Christmas
is over, that group is shop workers.
It is not that they like to
complain. They realize that they are going to be rushed off their feet at
Christmas. They know that their employers need happy customers to make their
profits that pay their wages. But there is one thing about working in a shop
over Christmas that is too bad to tolerate.
That thing is music.
These days, all shops and many offices have what is known as "Piped music"
or "muzak" playing for all the hours that they are open. Muzak has an odd
history. During the 1940s, music was played to cows as part of a scientific
experiment. It was found that co
A. rush their feet off all day.
B. listen to the music playing all the time in the shop.
C. work overtime to make more profits for the boss.
D. try to please the customers.
[单项选择] 下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题。
{{B}}第一篇{{/B}}
{{B}}
Shakespeare{{/B}}
When talking about the world’s greatest poet and greatest dramatist, only
one name can possible suggest itself; that of William Shakespeare. Nearly every
Englishman has some knowledge, however slight, of the work of this greatest
writer. We use words, phrases and quotations form Shakespeare’s writings that
have become part of the common property of English-speaking people. Most of the
time we are probably unaware of the source of the words we use. For example, and
old lady, after seeing a performance of Hamlet complained, "It was full of
well-known proverbs and quotations!"
Shakespeare made full use
of the great resources of the English language. Most of us use about five
thousand words in
A. Shakespeare used an enormous number of words of the English language.
B. Shakespeare expressed his appreciation of the richness of the English language.
C. Shakespeare studied the various usages of the English language.
D. Shakespeare tried to maintain the original meaning of many English words.
[单项选择] 下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。 {{B}}第一篇{{/B}}
{{B}}
Adaptation of Living Things{{/B}}
Certain animals and
plants develop characteristics that help them cope with their environments
better than others of their kind. This natural biological process is called
adaptation. Among the superior characteristics developed through adaptation are
those that may help in getting food or shelter, in providing protection, and in
producing and protecting the young. That results in the evolution of more and
more organisms that are better fitted to their environments.
Each living thing is adapted to its way of life in a general way, but each
is adapted especially to its own distinct class. A plant, for example, depends
upon its roots to fix itself firmly and to absorb water and ino
A. A living thing may adapt in its structure.
B. An organism may adapt in its function.
C. A living creature may adapt in its genetic makeup.
D. A living organism may adapt in its sleeping habit.
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