A study ________ in the USA in 1977 showed that the chemical ASA in aspirin could prevent a stroke.
#95255
A
carrying out
B
carried out
C
working out
D
worked out
推荐题目
I wanted to park my car by the roadside, but a policeman came up and told me ____.
#92746
A
not to
B
not to do
C
not do it
D
do not to
When we saw the road ______ with snow, we decided to spend the holiday at home.
#89723
A
cover
B
to cover
C
covering
D
covered
The patent officer ______ with my file explained to me that a plant variety is not a/an _______ invention as it is a result of adjusting growth scientifically.
#94527
A
dealing; abrupt
B
dealt; innocent
C
deals; practical
D
dealing; valid
Hearing his words，I couldn’t decide ______or remain.
#98469
A
whether to go abroad
B
if I go abroad
C
if to go abroad
D
to go abroad
Mary found herself looking forward more and more ________ the coming entrance examination.
#96814
A
to pass
B
to have passed
C
passing
D
to passing