Before a problem can be solved, it must be obvious ________ the problem itself i

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Before a problem can be solved, it must be obvious ________ the problem itself is.[     ]
A．what
B．that
C．which
D．why

答案

举一反三

            he referred to in his article was unknown to the general reader.    [     ]
A．That
B．What
C．Whether
D．This

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The machine has been used much too long. ________it doesn"t work well sometimes. [ ]
A. It"s no wonder that
B. There"s no doubt if
C. It"s unlikely
D. That"s because

题型：四川省同步题难度：| 查看答案

It is obvious to the students ________ they should get well prepared for their future.[     ]
A．as
B．which
C．whether
D．that

题型：陕西省同步题难度：| 查看答案

It has been proved________violence on television has a bad effect on the development of children.[     ]
A．whether
B．because
C．when
D．that

题型：山东省同步题难度：| 查看答案

       _impressed me most was the scenery of  Changbai Mountains.         [     ]
A. What
B. That
C. While
D. It

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