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    At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were        to show that we all have “a body clock”         us, which controls the        and fall of our body energies,        us different from one day to the next.
    The        of “a body clock” should not be too        since the lives of most living things are controlled        the 24 hour night-and-day cycle. We feel        and fall asleep at night and become        and energetic during the day. If the 24 hour-cycle is        , most people experience unpleasant        . For example, people who are not        to working at night can find that        of sleep causes them to        badly at work.
          the daily cycle of sleeping and       , we also have other cycles which       longer than one day. Most of us would        that we feel good on some days and not so good on        ; sometimes our ideas seem to flow and at other times, they        do not exist.
    小题1:
    A．anxiousB．ableC．carefulD．proud
    小题2:
    A．insideB．aroundC．betweenD．on
    小题3:
    A．movementB．supplyC．useD．rise
    小题4:
    A．showingB．treatingC．makingD．changing
    小题5:
    A．inventionB．opinionC．storyD．idea
    小题6:
    A．difficultB．excitingC．surprisingD．interesting
    小题7:
    A．fromB．byC．over D．during
    小题8:
    A．dull B．tired C．dreamy D．peaceful
    小题9:
    A．regularB．excitedC．livelyD．clear
    小题10:
    A．disturbedB．shortenedC．resetD．troubled
    小题11:
    A．momentsB．feelingsC．sensesD．effects
    小题12:
    A．preventedB．allowedC．expectedD．used
    小题13:
    A．miss B．noneC．lack D．need
    小题14:
    A．performB．showC．manageD．control
    小题15:
    A．WithB．As well asC．ExceptD．Rather than
    小题16:
    A．working B．movingC．livingD．waking
    小题17:
    A．repeatB．remainC．last D．happen
    小题18:
    A．agreeB．believeC．realizeD．allow
    小题19:
    A．otherB．the otherC．all otherD．others
    小题20:
    A．justB．onlyC．stillD．yet

    小题1:B
    小题2:A
    小题3:D
    小题4:C
    小题5:D
    小题6:C
    小题7:B
    小题8:B
    小题9:C
    小题10:A
    小题11:B
    小题12:D
    小题13:C
    小题14:A
    小题15:B
    小题16:D
    小题17:C
    小题18:A
    小题19:D
    小题20:A
    试题分析：文章大意：本世纪初，科学家们就已经发现人体不仅有血肉组成，还有时间。因此，根据这个发现，他们能够证明在人体内存在生物钟。
    小题1:B 形容词辨析。根据这个发现，他们能够证明在人体内存在生物钟。be anxious to do渴望做某事，此处没有强调科学家的心理活动，故排除。be able to do 能够干某事，所以答案选B。
    小题2:A 词义辨析。根据常识及文中第一句we’re built not just of flesh and blood but also of time.可知生物钟是在我们的体内（inside）所以答案选A。
    小题3:D 名词辨析。空格上所缺词应与and后面的fall 构成互补关系，即用rise与fall相对，表示起伏。A.运动；B供应； C.使用 D.升起，根据句意生物钟能控制我们体内能量的起伏，选择D。
    小题4:C 动词辨析。结合前一句话中的controls可知，生物钟能使我们每天的表现不一样。show 证明，展示，指示；treat对待；change使改变。make+宾语+宾补 使……怎么样。如选change就意为使我们发生变化,与上下文意思不符。所以答案选C。
    小题5:D 名词辨析。“生物钟”只是科学家经过研究而得出的一种结论或观点。所以选择D idea。opinion表示个人的看法。
    小题6:C 形容词辨析。根据空格后面的原因状语从句“因为大部分生物的生命都受一天24小时循环的控制。”可知“生物钟”这种观点并不令人惊奇（surprising），所以答案选C。其他选项A 困难的 B兴奋的  D有趣的
    小题7:B 介词辨析。前面用的是……are controlled 被动形式，只能与by连用。句意：大部分有生命的动物都受到日夜轮回这个时间循环的控制。
    小题8:B 形容词辨析。结合常识可知，人工作一天，到晚上应是比较劳累tired。另外，后面的fall asleep 应是由劳累引起的。dreamy多梦的，不应出现在fall asleep之前。
    小题9:C 形容词辨析。人休息了一晚上，第二天又充满了生机lovely、和活力energetic。
    小题10:A动词辨析。如果时间循环被打乱disturbed，大部分人就会不舒服。A. 打搅 B缩短 C重新设置 D 惹麻烦，所以答案选择A。
    小题11:B 名词辨析。结合下一句的例子可知，此处应为人感到不舒服或者说有不愉快的感觉unpleasant feelings。A时候，时刻 B感觉；感情 C感官，意识 D 效果，影响
    小题12:D 考查动词辨析。be used to doing something习惯于……。不习惯于在晚上工作的人如果晚上工作，工作就会做不好。其它选项不与doing连用，而是用to do动词不定式。
    小题13:C 词意辨析。lack此处为名词，在从句中做主语，lack of sleep缺乏睡眠。B none of 一点没有；D need of 需要，
    小题14:A 名词辨析。缺乏睡眠导致第二天工作表现不好。A perform工作；表现 B 表演；显示 C经营；管理 D 掌握；控制
    小题15:B 词意辨析。根据后面的also可得知对应的“和……一样”用as well as答案。
    小题16:D 动词辨析。人类的日夜循环分为两段时间：即睡眠时sleeping的时间和醒着的时间waking。
    小题17:C 动词辨析。根据后面的longer than one day 可知，此处last“持续”。A 重复 B仍然 D发生；碰巧
    小题18:A 动词辨析。大部分人都有这种体验，都同意（agree）这种看法。
    小题19:D 代词辨析。上文提到了some days与之相对应的是other days即others。
    小题20:A 副词辨析。此处just用于否定句中表强调,它们根本就不存在。
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    Passage 1
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    Passage 2
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    Today’s consumer faces a wider range of choices than ever before, Add to that the steady stream of sales campaigns, and shopping smart only gets harder. To buy economically and reduce waste, safeguard health and protect the environment, you’ll need to follow some basic principles and have a clear idea of what you want.
    1. Do Your Homework
    Before making any major purchase, take the time to research it. Plentiful resources are usually available online. Avoid buying in a hurry, and don’t be persuaded by overenthusiastic salespeople. Sleep on it if necessary—you won’t regret giving yourself some extra time to think.
    2. Take the Long View
    Consider the running costs as well as the initial price of any item you buy. Many environmentally friendly products cost more to buy, but save you money in the long run. Choose items that are made to last. For example, pick a sofa that has a hardwood or steel frame rather than one made of softwood, which may break easily.
    3. Skip the Disposable Option
    Buy reusable products like washable cloth towels, handkerchiefs, serviettes（餐巾）and cleaning cloths rather than paper, single-use varieties. Avoid other disposable supplies like cups, glasses, and chopsticks, too.
    4. Take the Local Route
    Buy local products that are in season. It’s usually cheaper and fresher and has less harm to the environment. Markets and roadside stands are good sources. Some supermarkets also buy from local producers. Support it if you have one.
    5. Avoid Wasteful Packaging
    Better not buy products that have too much packaging. It’s estimated that approximately 10 percent of every shopping bill is actually paying for packaging—which you normally just throw away! Moreover, significant amounts of energy are used in the production of packaging. Purchasing refillable and renewable containers can also help cut this kind of waste.
    小题1:What could be the best title for this passage?
    A．Protection of the Planet
    B．Green Shopping Principles
    C．Environmentally Friendly Products
    D．Resource Conservation
    小题2:The underlined phrase “sleep on it” has the similar meaning with      .
    A．think it overB．forget about it
    C．set it asideD．put it into action
    小题3:Why does the author advise us to buy lasting products?
    A．Because they are less expensive to buy.
    B．Because they save money in the long run.
    C．Because they will never break.
    D．Because they are local products.
    小题4:Which of the following can be considered green shopping?
    A．Following the stream of sales campaigns.
    B．Buying disposable chopsticks.
    C．Focusing on packaging.
    D．Purchasing from local markets.

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