When it ______ research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
#71865
A
refers to
B
related to
C
comes to
D
talks to
推荐题目
He doesn’t eat pork, but ______ that he’ll eat just about anything.
#73929
A
other than
B
more than
C
better than
D
rather than
I have to clean up the room,then I’ll come shopping with you.
#82027
A
Firstly
B
At first
C
To start with
D
First (of all)
—I am wondering if we could go boating on the weekend. —It a good idea.
#83210
A
sound
B
sounded
C
sounding
D
sounds
Clinical evidence began to ______ suggesting that the new drugs had a wider range of useful effect than had been predicted from experiments in animals.
#70261
A
operate.
B
strengthen
C
accumulate
D
approve