There’s no way of knowing why one man makes an important discovery another man, also intelligent, fails.
#39533
A
since
B
If
C
as
D
while
推荐题目
We’ll have a________ holiday. Let’s go to the beach，shall we?
#35664
A
three-day
B
three days
C
three-days
D
three-days’
—Do you know that Mrs. Obama came to China with her mother and two daughters?—Yes. And it is their ______ visit to China.
#35784
A
one
B
first
C
the first
D
once
-- What do you think of the film you saw yesterday?-- Oh, it's than the movies I have ever seen.
#35685
A
interesting
B
more interesting
C
the most interesting
D
most interesting