Although they had made careful preparation, unexpected difficulties________in th

题型：同步题难度：来源：

Although they had made careful preparation, unexpected difficulties________in the course of their
experiments.[     ]
A．rose
B．raised
C．lifted
D．arose

答案

举一反三

It"s the government that________the country through the difficulties ahead.[     ]
A．lead
B．guarded
C．guides
D．directed

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He is no longer a child，and let him learn to________the problem himself.[     ]
A．settle
B．discuss
C．deal
D．decide

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He should________his attention________the main problems.[     ]
A．aim；with
B．pay；on
C．focus；on
D．concentrate；with

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We don"t like him because he is always speaking highly of the part he________in the group.[     ]
A. makes
B. takes
C. does
D. plays

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At minus 130°C,   a living cell can be ________ for a thousand years.[     ]
A. spared
B. protected
C. preserved
D. developed

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