Itpuzzlesthescientistssomemamm

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更新 2022-09-03
科目英语
题型单选题
难度中等
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挑错有奖

It puzzles the scientists _____ some mammals produce their young _____ others lay eggs.

A．that; while

B．what; while

C．that; as

D．what; as

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相关试题

The old engineer's eyes still shone bright in the wrinkled brown face and his step as he came across the room was，though slow.

A．

shaky

B．

heavy

C．

casual

D．

steady

题型：未知
难度：未知

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Giviog 22.up maker to go back to full time caudation was s a big________, but now I know was the best decision I ever made.

A．project

B．commitment

C．competition

D．ambition

题型：未知
难度：未知

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“Tommy, run! Be quick! The house is on fire!” the mother shouted, with______ elderly in her votes.

A．near

B．rudeness

C．regret

D．patois

题型：未知
难度：未知

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The police still haven’t found the lost child, but they’re doing all they .

A．can

B．may

C．must

D．should

题型：未知
难度：未知

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—What a mistake!
—Yes.I his doing it another way, but without success.

A．was suggesting

B．will suggest

C．would suggest

D．had suggested

题型：未知
难度：未知

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