疝内容物与疝囊发生粘连而不能完全回纳入腹腔的疝是指
A.易复性疝 B.滑动性疝 C.难复性疝 D.嵌顿性疝 E.绞窄性疝
参考答案:C
— Who are you going to have _______ this letter for you?
— My secretary.
A.type
B.typed
C.been typed
D.been typing
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