单项选择题

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

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

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单项选择题

I found my daughter sitting in the kitchen, crying （）.

A、strongly
B、bitterly
C、heavily
D、deeply

单项选择题

How （） will you finish your homework In half an hour.

A、 long
B、 soon
C、 often
D、 fast

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