Great as Newton was, many of his ideas_____today and are being modified by the work of scientists of our time.
#104460
A
are to challenge
B
have challenged
C
are challenging
D
have been challenged
推荐题目
My daughter’s blue jeans _____ easily, and she can wash by herself.
#100710
A
washes
B
are washed
C
wash
D
is washed
Some of the wolves there _________ their fur.
#102728
A
are hunting
B
are hunting for
C
are hunted for
D
hunt for
By the time he _____ back last night, we had got 200 pictures of the Chang'e-3 lunar probe.
#99993
A
came
B
had come
C
was coming
D
would come
— The food here is nice enough.— My friend ______ me a right place.
#104007
A
introduces
B
introduced
C
had introduced
D
was introducing
Tom as well as two of his friends ______ to the concert last night.
#104342
A
has been invited
B
had been invited
C
were invited
D
was invited