7.Although the causes of cancer ____， we do not yet have any practical way to prevent it.
#105343
A
are being uncovered
B
have been uncovering
C
are uncovering
D
have uncovered
推荐题目
一Have you handed in your schoolwork yet?一Yes,I have.I guess it _____ now.
#105339
A
has graded
B
is graded
C
is being graded
D
is grading
7.Although the causes of cancer ____， we do not yet have any practical way to prevent it.
#105343
A
are being uncovered
B
have been uncovering
C
are uncovering
D
have uncovered
--- Why are you so angry?--- Jack failed to return my tennis bat on time again. He _______his words.
#105302
A
is always eating
B
has always eaten
C
always eat
D
always ate
Tom, would you like to stop practising B-Box? The CCTV news____ and I want to listen.
#105325
A
is broadcasting
B
has been broadcasting
C
is broadcast
D
is being broadcast
In China, farmers are ______ from the central government’s new policies on agriculture.
#105328
A
suffering
B
profiting
C
earning
D
learning