158.The fact has worried many scientists ____ the earth is becoming warmerand warmer these years.（江西）A.what B.which C.that D.thoughhas worried 在这里怎么讲.请划分句子成分.
问题描述：
158.The fact has worried many scientists ____ the earth is becoming warmer
and warmer these years.（江西）
A.what B.which
C.that D.though
has worried 在这里怎么讲.请划分句子成分.
答