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题型:语法填空(单句) 题类:常考题 难易度:困难

黑龙江省哈尔滨市第九中学2017-2018学年高一上学期英语期末考试试卷

The country life he was used to (change) greatly since 1992.
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阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

Why Does Rain Smell So Good?

    Do you love the smell of rain? If so, you're not alone.

    {#blank#}1{#/blank#}(actual), some scientists believe that people got their love for the smell of rain from {#blank#}2{#/blank#}(ancestor), who relied on wet weather for their survival.

    But what makes rain smell so nice? There are several smells associated with rainfall that people find pleasing.

    One of these smells {#blank#}3{#/blank#}(call) “petrichor(尘土的味道).” Petrichor, a term created in 1964 by two Australian scientists studying the smells of {#blank#}4{#/blank#}(rain) weather, comes from some chemical reactions.

    During dry periods some plants produce oils, and when it rains, these oils go into the air. Another reaction occurs when chemicals {#blank#}5{#/blank#}(produce) by some bacteria are sent out. All of these chemicals combine to create the pleasant particular smell when rain hits {#blank#}6{#/blank#} ground.

    Another smell associated with rain is ozone(臭氧). During a thunderstorm, lightning can split oxygen and another gad and {#blank#}7{#/blank#}(it) in turn can combine into a new substance. This substance reacts with other chemicals to form ozone, {#blank#}8{#/blank#} has a sharp smell.

    When someone says he can smell rain coming, it may be that wind from an {#blank#}9{#/blank#}(approach) storm has carried ozone down from the clouds and {#blank#}10{#/blank#} the man's nose.

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