Question

【题目】The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.

A. what B. which

C. that D. though

Answer 1

【答案】C

【解析】试题分析：本题考查同位语从句。从句 “_____ the earth is becoming warmer and warmer these years” 解释说明 the fact 的内容，并且从句意义完整，成分完整，应用 that 引导，故正确答案为C。