______this difficulty is overcome, other problems will be easy to solve.A．ForB．W
题型：不详难度：来源：
______this difficulty is overcome, other problems will be easy to solve.| A．For | B．Whether | C．Once | D．Though |
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答案
| C |
解析
| 考查连词，For 因为，Whether 是否，Once 一旦，Though 虽然，句意：一旦这个困难被克服，其它的问题就容易解决了。所以选C。 |
举一反三
It was in this house ______ he was born and grew up.| A．that | B．where | C．which | D．when |
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_____________ all the seats were full, he had no choice but to stand up.| A．For | B．As | C．Though | D．Unless |
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She is popular among her classmates, ________________ she can be annoying at times.| A．in case | B．as if | C．even if | D．so that |
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