分析 本文是一篇科普文,報道了BBC的一篇文章.主要描述了月球?qū)Φ厍虻挠绊懀步榻B了如果沒有了月球,地球?qū)兂墒裁礃樱?/p>
解答 52.A文章第二段描述了月球的基本情況.月球形成于45億年前,月球與地球因為引力所以互相吸引.月球也在放慢地球自轉(zhuǎn)的速度,導致了地球自轉(zhuǎn)一圈的時間由5小時變?yōu)?4小時.故選A.
53.B文章第三段描述了月球在圍繞地球公轉(zhuǎn)的同時也在以每年3.78厘米的速度遠離地球.故選B.
54.D本題可以用排除法.結(jié)合文章內(nèi)容來看,并沒有提到月球與地球的距離可以影響到月球的大小,排除A和B;也沒有提到會影響到火星的移動方式,排除C.故選D.
55.C結(jié)合全文來看,本文主要描述了月球?qū)Φ厍虻闹匾,也科學的論述了如果沒有月球,地球?qū)兂墒裁礃樱蔬xC.
點評 對于科普文,需要注意解答時,首先理解問題,然后帶著問題快速閱讀短文,找出與問題有關(guān)的句子,并理解大意,最后仔細斟酌,找出答案,并核對.
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www.childhoodbeliefs.com |
Childhoodbeliefs.com is a collection of strange and funny ideas we had when we were children.Add your own to our site. |
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