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题型：单选题题类：模拟题难易度：普通

It is said that the gravity on Mars is only about of the gravity on earth.

A、three-eighths B、third-eighth C、third-eighths D、third-eight

举一反三

______ of the floor _______ wet.

About________ of the books in our school library________ written in Chinese.

____ the students in our school is about 5000,_______ of them are boys.

The desk and the bed take up _______ of the space of the room.

In the Ukraine(乌克兰), a ________ of the population are Russia speakers.

地球上三分之一的土地是沙漠。

{#blank#}1{#/blank#} {#blank#}2{#/blank#} of the land on the earth {#blank#}3{#/blank#} desert.

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