问题
选择题
The fact has worried the people across the world ___________ the earth is becoming warmer and warmer these years.
A.what
B.which
C.that
D.where
答案
:C
:考查同位语从句。同位语从句that the earth is becoming warmer and warmer these years对前面的the fact的内容进行解释说明。That起引导作用,不充当任何成分,没有任何意义。故C正确。