【题目】 Today Jenny and I did a special experiment. Jenny filled a jar with water and then put a cardboard on the top of the jar. Jenny put her hand on the cardboard and turned the jar u【1】down quickly. I thought the water would p【2】out. But to my surprise, when Jenny 【3】(take) off her hand, the cardboard held the water. Jenny explained that the f【4】of the air was strong enough to hold the water. From the experiment I know science is very fantastic. Scientific 【5】(discovery) are amazing, too.
【答案】
【1】upside
【2】pour
【3】took
【4】force
【5】discoveries
【解析】
短文大意：本文作者讲述了和珍妮共同做的一个实验，感受到科学是非常奇妙的。
【1】句意：珍妮把手放在纸板上，迅速地把罐子倒过来。
upside down颠倒，固定短语；根据句意语境和首字母提示，可知填upside。
【2】句意：我以为水会流出来。
pour out倾泻，固定短语；根据上文“turned the jar upside down把罐子倒过来”，结合首字母提示，可知以为水会流出来。would将会，后接原形动词，故填pour。
【3】句意：但令我惊讶的是，当珍妮松开手的时候，纸板托住了水。
take off拿掉。本句是时间状语从句，主句动词held是hold的过去式；根据句意时态和首字母提示，可知从句动词需用过去式，故填took。
【4】句意：詹妮解释说，空气的力量足够把水托住。
定冠词the后接名词；the force of……的力量，根据句意语境和首字母提示，可知填force。
【5】句意：科学发现也很惊人。
scientific discovery科学发现；系词are需跟复数人称，根据句意语境和首字母提示，可知填discoveries。
短文填空，要求根据句意语境和首字母提示填空，使句意通顺，语法正确，文意连贯。主要考查单词形式，包括名词的单复数和所有格、动词的三单形式、非谓语动词、基数词或序数词，主格代词/宾格代词和物主代词（形容词性物主代词/名词性物主代词）等。这类题目难度不大，重点是掌握句意，在理解的基础上把握句子时态，从而判断所填单词的正确形式。例如小题5，scientific discovery科学发现；系词are需跟复数人称，根据句意语境和首字母提示，可知填discoveries。
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