He, a Nobelist, made great ______________ to researching in this area.
#5814
A
encouragements
B
constitutions
C
breakthrough
D
contributions
推荐题目
I listened to Dr. Johnson’s lecture about biology, but I failed to get its key ____.
#7298
A
words
B
notes
C
messages
D
points
The experiment turned out to be , which wasn’t ______ they wanted.
#6901
A
a completely failing ; as
B
a complete failure ; what
C
completely failure ; that
D
failed ; 不填
Perhaps the beautiful beach is the island’s main ______. It is always full of tourists.
#6401
A
land
B
visit
C
attraction
D
tour
Niagara Fall is a great tourist _______ , drawing millions of visitors every year.
#6405
A
attention
B
attraction
C
appointment
D
arrangement
—Look! This is__________ . —Very beautiful. When did she take it?
#6821
A
mymother’spicture
B
mymotherinthepicture
C
apictureofmymother
D
apictureofmymother’s