【題目】閱讀理解。

海底世界

海底動物各有各的活動特點。海參靠肌肉伸縮爬行,每小時只能前進(jìn)四米。梭子魚每小時能游幾十千米,攻擊其他動物的時候,比普通的火車還要快。烏賊和章魚能突然向前方噴水,利用水的反推力迅速后退。有些貝類自己不動,但能巴在輪船底下做免費的長途旅行。還有些深水魚,它們自身就有發(fā)光器官,游動起來像閃爍的星星。

1.________畫出這段話的中心句

2.多音字組詞。

參:cān( ) cēn( ) shēn( )

3.選擇填空。 A打比方 B作比較 C列舉數(shù)字

(1)海參靠肌肉伸縮爬行,每小時只能前進(jìn)四米。( )

(2)梭子魚每小時能游幾十千米,攻擊其他動物的時候,比普通的火車還要快。( )

(3)還有些深水魚,它們自身就有發(fā)光器官,游動起來像閃爍的星星。( )

【答案】1. 海底動物各有各的活動特點。2. 參加 參差 人參3. C B A

【解析】1. 這是考查學(xué)生對課文內(nèi)容的理解能力。中心句是文本第一句。2. 本題考查學(xué)生對多音字的掌握能力。依次為:參加 參差 人參3. 這是考查學(xué)生對課文說明方法的運用能力。答案依次為:CBA。

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