问题详情:
The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
A. what B. which
C. that D. though
【回答】
C
知识点:复合句
题型:选择题
问题详情:
The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
A. what B. which
C. that D. though
【回答】
C
知识点:复合句
题型:选择题