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【单选题】
慢性肺心病发病的关键环节是（）。A.
气管阻塞
B.
肺泡膨大
C.
右室肥大
D.
肺动脉高压
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】女子最早参加奥运会比赛是在哪一届?
【单选题】—I haven't seen Bob for a long time. —I haven't seen him, ________. [ ]
A.
too
B.
either
C.
instead
【简答题】女子拳击比赛是什么时候被列为奥运会的正式比赛项目的?
【简答题】女子摔跤被列为奥运会正式比赛项目是在哪届奥运会上?
【单选题】What's wrong with him? I haven't seen him_____ last Wednesday. [ ]
A.
since
B.
on
C.
by
D.
until
【单选题】I haven't seen him for quite a long time, but his parents ______ him sometimes.
A.
still saw
B.
still see
C.
have still seen
D.
has still seen
【简答题】I haven't seen him this morning.
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