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單項(xiàng)選擇題

Universal peace would be（）to all mankind.

A.beneficial
B.valid
C.advisable
D.worthy

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單項(xiàng)選擇題

The present difficulties（）from our failure to deal with the problem when it first arose.

A.step
B.stem
C.steer
D.sponsor

單項(xiàng)選擇題

The one pleasure that Einstein（）his great fame was the ability it gave him to help others.

A.resulted from
B.stirred up
C.turned out
D.derived from