873.Barbara is easy to recognize as she's the only one of the women who ______ evening dress.
A.wear
B.wears
C.has worn
D.have worn
874.Wind power is an ancient source of energy ______ we may return in the near future.
A.on which
B.by which
C.to which
D.from which
873.答案是B;考查定语从句中主谓一致和时态。the only one of…为先行词时，定语从句修饰one,故谓语动词应用单数；刺猬表示经常性，习惯性动作时，要用一般现在时。
874.答案是C;考查介词+which的用法。此举相当于Wind power is an ancient source of energy which/that we may return to in the near future.
