More historical buildings in the old town will fall down ________we try our best

More historical buildings in the old town will fall down ________we try our best

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More historical buildings in the old town will fall down ________we try our best to protect them.
A.ifB.sinceC.unlessD.in order that

答案
C
解析

试题分析:句意为:如果我们不尽力保护,老城里更多的历史性建筑将倒塌。if:如果, since:自从……以来, unless :如果不, in order that:为了。结合语境可知应故选C。
举一反三
– How long have you been collecting stamps?
        I was ten years old.
A. Since                        B. When                 C. Because
题型:不详难度:| 查看答案
---We can’t get good grades ______ we study harder.
---I agree. That’s why I study so hard.
A. because                  B. if                       C. unless
题型:不详难度:| 查看答案
We still gave the boy another chance ______he made some mistakes.
A.thoughB.whenC.unlessD.because

题型:不详难度:| 查看答案
        they are twins, they don’t look the same at all.
A.BecauseB.ThoughC.AsD.Since

题型:不详难度:| 查看答案
--- This history book is of great value.
--- Exactly. ____________ can be enjoyed from it ____________ you have a deep understanding of it, however.
A.Nothing; unlessB.Few; tillC.Something; untilD.Little; since

题型:不详难度:| 查看答案
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