Scientists still wonder ______ cloning will help or harm us and _____ it is leading us.
#68782
A
that; what
B
whether; where
C
if; that
D
whether; how
推荐题目
_______ I know the money is safe, I shall not worry about it.
#74568
A
Even though
B
Unless
C
As long as
D
While
—Will the match be cancelled because of the bad weather?—No, rain or shine, the match will be held as .
#68279
A
schedule
B
scheduling
C
scheduled
D
to schedule
Our teacher is always busy preparing lessons until 11 o’clock at night, ______we students have gone to sleep.
#74335
A
that time
B
by which time
C
by that time
D
which time
Some scientists have questioned the theory ______ CO2 is causing dangerous global warming.
#68429
A
which
B
what
C
that
D
why