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單項(xiàng)選擇題

This is（）the most difficult job I have ever tackled.

A.by rights
B.by itself
C.by oneself
D.by far

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單項(xiàng)選擇題

Success now seemed very remote and Bernard felt（）

A.pessimistic
B.optimistic
C.positive
D.objective

單項(xiàng)選擇題

What's the Chinese（）for the English word "refer"?

A.equality
B.equal
C.equivalent
D.equation