【題目】Have you ever wondered how a kite stays in the air? Wind is very important but so are two scientific words: gravity(重力) and lift(舉力).

When something is in the air, gravity is what pulls something back to the ground. _______ you throw a ball in the air, it comes back down because of gravity. When leaves ____ trees onto the ground, that’s gravity. When you put a kite in the air, gravity wants to bring it ____ . Then what keeps it up? Wind! Wind creates lift.

Lift is what happens when wind pushes against something and carries it up. When a plastic bag gets caught in the wind, lift is what causes it to rise into the air. When you put a silk scarf ____ a fan, lift causes ____ to wave(擺動). An object’s lift depends on the size of its surface or its area. A piece of _____will float(漂。in the wind, but it won’t float if you make that paper into a ball. That’s because you’ve made the surface smaller.

To find out if there is enough wind to fly a kite, go outside and look up. If you ______leaves dancing on trees or flags waving sideways, it’s ____ good kite-flying weather. When the wind is strong enough to move a flag, it’s moving ____ 7 to 18 miles an hour. That’s just ____ to lift a common kite.

1A. WhichB. WhatC. WhenD. Where

2A. take offB. get offC. keep offD. fall off

3A. upB. downC. offD. out

4A. in the middle ofB. n the front ofC. at the back ofD. in front of

5A. tB. themC. thisD. that

6A. breadB. cakeC. cardD. paper

7A. hearB. seeC. smellD. feel

8A. probablyB. finallyC. quicklyD. hardly

9A. onB. atC. inD. by

10A. wrongB. favouriteC. rightD. strange

【答案】

1C

2D

3B

4D

5A

6D

7B

8A

9B

10A

【解析】

文章大意:你有沒有想過風箏是怎么留在空中的?風是非常重要的,但兩個科學術語也是如此:重力(重力)和升力(舉)。當有東西在空中時,重力會把它拉回到地面。當風推動某物并將其向上移動時,就會產(chǎn)生升力。

1句意:當你把球拋向空中時,它會因為重力而下降。A.哪個;B.什么;C.什么時候;D.在哪里。A.哪個;B.什么;C.什么時候;D.在哪里。根據(jù)句意可知,此空是當……時,此空故填when,故選C。

2句意:當樹葉從樹上掉到地上,那就是重力。A.起飛;B.下車;C.遠離;D.掉下來。根據(jù)句意可知,此空是掉下來的意思,此空故填fall off,故選D。

3句意:當你把風箏放在空中時,地心引力會把它降下來。A.up向上;B.down向下; 下;

C.off離開; 從…落下;D.out出局; 在外。根據(jù)句意可知,此句是向下的意思,此空故填down,故選B。

4句意:當你把一條絲巾放在扇子前面時,掀起它會使它搖擺。A.in the middle of在…的中間;

B.in the front of在最前面,(指的是在……內(nèi)部,是整體中的一部分);C.at the back of在…后方[背后]; 支持; 在內(nèi)心中;D.in front of面前; 在…前面(指的是在……外部)。根據(jù)句意可知,此空應填in front of,故選D。

5句意:當你把一條絲巾放在扇子前面時,掀起它會使它搖擺。A.它;B.它們;C.這個;D.那個。根據(jù)句意可知,根據(jù)上半句a silk scarf 可知,此空應填it,故選A。

6句意:一張紙會在風中飄浮,但如果你把它做成一個球,它就不會飄浮。A.面包;B.蛋糕;C.卡片;D.紙。根據(jù)句意可知,此空是紙的意思,此空故填paper,故選D。

7句意:如果你看到樹葉在樹上跳舞,或者旗幟在旁邊飄揚,那可能是風箏飛行的好天氣。A.聽見;B看見;C.聞;D.感覺。根據(jù)句意可知,此空是看見的意思,此空故填see,故選B

8句意:如果你看到樹葉在樹上跳舞,或者旗幟在旁邊飄揚,那可能是風箏飛行的好天氣。A.可能;B.最后;C.很快;D.很難。根據(jù)句意可知,此空的可能的意思,此空故填probably,故選A。

9句意:當風力足以移動旗幟時,它的速度是每小時718英里。根據(jù)句意可知,此空的意思是表示速度,要用介詞at,故選B。

10句意:舉一只普通的風箏是不對的。A.wrong有毛病的,錯誤的,不正確的;B.favourite特別受喜愛的; 特別喜愛的人C.right正確的;D.strange陌生的,生疏的; 奇怪的。根據(jù)句意可知,此空是錯誤的意思,此空應填wrong,故選A

完型填空,考查學生們在具體語境中運用語言的能力,綜合性較強。做題時,應先通讀短文,了解大意;然后根據(jù)上下文語境的提示做題,先易后難,注意辨析選項中的單詞的意思和用法,并注意空前后的搭配;最后應再讀一遍短文,檢查答案。

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