This maths problem isthat one．A. not so easy asB. more easy thanC. as easier asD. easy tha

问题补充：

This maths problem isthat one．

A. not so easy as

B. more easy than

C. as easier as

D. easy than

答案：

(答案→)A. not so easy as

B. more easy than

C. as easier as

D. easy than

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