Colour - blind people often find it difficult to ______ between blue and green.

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问题 Colour - blind people often find it difficult to ______ between blue and green.

选项 A、separate
B、distinguish
C、compare
D、contrast

答案B

解析 动词句型辨别。四个动词的结构各有不同: separate sth.from...,distinguish sth.from...,distinguish between A and B,compare sth.with..., compare sth.to...,contrast sth.with...,因此从结构上看应选B),而且distinguish 正是表示“区别、区分”之意。同样的例子还有:Can you distinguish cotton cloth from linen?(你能区分棉布和亚麻布吗?) You should be able to distinguish between right and wrong.(你应该能够辨别是非。)
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