．The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
#34793
A
what
B
which
C
that
D
though
推荐题目
―How do you find being an ice cream taster? ―Fantastic! It is a job ________ you can get paid to taste ice cream．
#34254
A
that
B
where
C
what
D
which
______ you are familiar with the author’s ideas, try reading all the sections as quickly as possible.
#32360
A
Now that
B
Ever since
C
In case
D
As long as
It was______ your timely help that we accomplished the task on time.（2010·01·山西运城检测）
#32977
A
Because
B
thank
C
thanks to
D
as