(   ) 2.        of our classmates are good at basketball.

A. Two fifths     B. Two fifth

C. Second five    D. Two five

2. A分?jǐn)?shù)的表示法為分子為基數(shù)詞，分母為序數(shù) 詞。當(dāng)分子大于1時，序數(shù)詞上加s。

題目來源：2015仁愛英語同步練測考九年級英語全一冊仁愛版 > Topic 2 I'm excited about the things that will be discovered in the future.

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根據(jù)材料內(nèi)容選擇最佳答案。

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A. The population of the earth.

B. The earth they live on.    

C. The sky above them.    

D. Both B and C. H

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B. The ancient Chinese.

C. The ancient Egyptians.

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B. In the seventeen century.

C. In the sixth century BC.

D. In the seventh century BC.

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B. They also wondered why some planets changed their positions.

C. Pythagoras could not explain why people at the bottom of the world did not fall off.

D. With the help of Newton,people could see the sky more clearly.

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