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    C.前面提到过.当地人的发现和传说没有证据可依.这一次“又 是如此. 【查看更多】

     

    题目列表(包括答案和解析)

     I prefer a flat in Inverness to       in Perth , because I want to live near my Mom’s .

    A. one     B. that         C. it       D. this

    【详解】考查代词的用法。one表示泛指，相当于“a(an)+名词”，代替的是同类事物中的“一个”；that表示特指，相当于“the+名词”；it所代替的是前面提到过的同一事物；this表示近指。故选答案A。

     

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    阅读理解

    　　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 necessary for plants to make the food which we eat．Heat, too, makes our environment endurable(可忍的)．Various kinds of rays come through the air from outer space, but enormous(巨大的) 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 this 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(积累) 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 necessary to man because 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

    (2)

    We know from the passage that ________．

    [　　]

    A．

    exposure to even tiny amounts of radiation is fatal(致命的)

    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 that has been done to the Apollo crew members ________．

    [　　]

    A．

    is insignificant

    B．

    is enormous

    C．

    seems overestimated(过高估计的)

    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

    查看答案和解析>>

    阅读理解

    　　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 necessary for plants to make the food which we eat．Heat, too, makes our environment endurable(可忍的)．Various kinds of rays come through the air from outer space, but enormous(巨大的)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 this 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(积累)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 necessary to man because 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

    (2)

    We know from the passage that ________．

    [　　]

    A．

    exposure to even tiny amounts of radiation is fatal(致命的)

    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 that has been done to the Apollo crew members ________．

    [　　]

    A．

    is insignificant

    B．

    is enormous

    C．

    seems overestimated(过高估计的)

    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

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    第四部分书面表达（共两节，满分40分）

    第一节完成句子（共10小题；每小题1.5分，满分15分）

    阅读下列各小题，根据括号内的汉语提示，用句末括号里的英语单词完成句子。

    71．AIDS is said______（是）the biggest health challenge to both men and women in that area over the past few years.（be）

    72．So tired ______（他觉得）that he fell asleep soon.（feel）

    73．“It’s a new term and a new day. I wish I ______（能适应新环境）as soon as possible，”15-year-old Li Mingyang said.（adapt）

    74．I think it important ______（与我们的朋友保持联系）.（touch）

    75．______（她生病的原因）was that she ate something that had gone bad.（why）

    76．—Professor Crown，I attended your lecture on ecology at Berlin University last year. It was wonderful!

    —Thank you. But it______（一定是）more than two years ago，I think.（must）

    77．Another colleague who is known to have stolen things in the past______（怀疑）having stolen the camera.（suspect）

    78．______（再给我五分钟），and I’ll finish checking the report.（give）

    79．It was ______（你迟到）made the teacher very angry. You must come earlier next time!（come）

    80．The English teacher ______（刚才提到过的）is said to retire next term.（refer）

    [答案]

     

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    为探究“废电池对生物的影响”，某研究小组设计了如下实验步骤：
    ①将一节用过的五号电池破碎，浸泡在1000mL清水中3天，过滤得到滤液。②四只鱼缸分别贴上A、B、C、D标签，并在鱼缸中都加入5000mL清洁无污染的河水。③在A、B、C、D四只鱼缸中，依次加入50mL、100mL、200mL、400mL的电池浸出液。④再向各鱼缸中分别加入三条大小和生活状态差不多的小金鱼，定时喂等量同种饲料，观察并记录情况。

    结果如下表： 

                          A    B    C    D
    所加浸出液的体积(mL)  50  100  200  400
    小鱼存活的时间(天)    15   12   7    1
    根据以上设计，请回答下列问题：

    （1）该小组同学提出的问题是：__________________________________________________。

    （2）根据表中的数据可知，水中电池浸出液的浓度越大，金鱼存活的时间就越_______。

    （3）由此，该小组同学得出结论：废电池对生物有影响。你认为他们这样得出结论严谨？
    答：__________。为什么？_________________________________________。

    （4）请你对使用过的电池如何处理作出合理化的建议：_______________________。

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