Students shouldn’t be given so difficult a problem ______they can not work out.A
题型：不详难度：来源：
| Students shouldn’t be given so difficult a problem ______they can not work out. |
答案
| D |
解析
| 在定语从句中，当先行词被so/such修饰时用as引导定语从句。 |
举一反三
______was known to all,William had broken his promise ______ he would give us a rise.| A．As;which | B．As;that | C．It;that | D．It;which |
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John couldn’t finish his words ______ something had struck his throat.| A．though | B．as though | C．when | D．since |
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There was an old man wandering about the corner _____ waiting for someone.| A．even though | B．even if | C．as if | D．in case |
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_________ is known to all，good friends _________ happiness and value to life.| A．It； add | B．As； add | C．It； add up | D．As； add to |
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Hidden _____ by a big tree, his house was not to be seen.| A．as it was | B．as it is | C．as it did | D．as he did |
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