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
My TV has ________so I can't watch it and I don't know how to kill time.
#65737
A
broken in
B
broken down
C
broken out
D
broken into
The Education Bureau gave a warning to each school without any _____ when the virus of H1N1 hit our city.
#74962
A
delay
B
effort
C
schedule
D
consideration
It was lucky for him to be admitted _______the university he had longed for.
#67221
A
as
B
with
C
for
D
to
Our English teacher is ill, and we are all ______ her health.
#74488
A
careful of
B
concerned about
C
interested in
D
calm about
Computers have been made ______ clever that they can ______ problems like humans _______.
#74795
A
such; deal with; in some way
B
so; do with; in one way
C
such; do with; in the way
D
so; deal with; in a way