题目内容
Newton was one of the greatest scientists ________ in the world.
- A.on time
- B.of the time
- C.out of time
- D.of all time
B
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Great as Newton was, many of his ideas _______ today and are being modified by the work of scientists of our time.
A.are to challenge |
B.may be challenged |
C.have been challenged |
D.are challenging |