单项选择题

There have been several leading ______ in genetic engineering to help cure terminal cases.

(A) activeness
(B) advances
(C) currencies
(D) resistances
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单项选择题
She declined to confirm reports that the central bank was considering ______ the money supply.
(A) manipulating
(B) using
(C) fabricating
(D) rising
单项选择题
______ enjoying talking on the telephone surely finds the equipment convenient.
(A) Those
(B) Everywhere
(C) Whoever
(D) Anyone
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