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The fact has worried many scientists the earth is becoming warmer and warmer the

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The fact has worried many scientists the earth is becoming warmer and warmer the

The fact has worried many scientists ______the earth is becoming warmer and warmer these years.

A．what

B．which

C．that

D．though

 

试题答案

【答案】

C

【解析】略

 

标签：thescientistsisearthmany

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