更多"This mathematic problem was so diff"的相关试题:
[单项选择]This mathematic problem was so difficult that no student and no teacher_________ able to solve it.
A. were
B. is
C. was
D. are
[单项选择]It's really a difficult problem to ______.
A. look at
B. make out
C. deal with
D. dwell on
[单项选择]This difficult problem we face in the project has to be tackled before we can ______ to others.
A. pursue
B. advocate
C. precede
D. proceed
[单项选择]This is so difficult a problem that the scientist is known to（）on it for about ten years, but hasn't found an answer yet.
A. have worked
B. have been working
C. be working
D. work on
[单项选择]The most difficult problem we faced with is to reduce China's population to less than 1 billion within 20 years.
A. 现在摆在我们面前最艰巨的问题就是在20年里把中国人口降低到10亿。
B. 我们所面临的最艰难的问题是在20年里使中国的人口减少10亿。
C. 我们所面临的最艰难的问题是在20年里把中国人口降低到10亿以下。
D. 最艰巨的问题摆在我们面前就是在20年里把中国人口减少10亿。
[单项选择]To solve such a difficult problem is really ______ my grasp.
A. beyond
B. out of
C. beneath
D. away from
[单项选择]（）could solve that problem. It's so easy.
A. Someone
B. None
C. No one
D. Anyone
[单项选择]Why is transition so difficult
A. Because transition requires money and time.
B. Because many manufacturers are unwilling to change their equipment.
C. Because research on new materials is very difficult.
D. Because it takes 10 years.
