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【单选题】
7岁男孩，平时反复发生呼吸道感染，每年发生肺炎2～3次，活动后乏力，气促，无发绀。胸骨左缘第3～4肋间有Ⅲ～Ⅳ级收缩期杂音，粗糙，传导广，伴震颤。临床怀疑先天性心脏病：室间隔缺损。 此患儿的胸骨左缘第3～4肋间的Ⅰ～Ⅳ级全收缩期吹风样粗糙杂音产生的机制是A.
血流通过缺损口产生
B.
相对的肺动脉瓣狭窄
C.
相对的左房室瓣狭窄
D.
相对的右房室瓣关闭不全
E.
相对的主动脉瓣狭窄
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举一反三
【单选题】I could not find out from Jim whether he wants to come or not; he would not __________ himself.
A.
commit
B.
express
C.
behave
D.
cheat
【单选题】The author points out that ipaidabribe.com may NOT be effective in ____.
A.
revealing the phenomenon of corruption
B.
exposing the greedy officials to the public
C.
expressing people's anger over corruption
D.
getting the greedy officials punished by law
【简答题】Book a room online for your next vacation or road trip. And check out roadsideamerica. com’s favorite tourist attractions! Clarion Suites Hotel Anchorage★★★ 325 W. 8th Ave Anchorage, AK 99501 Nightly ...
【单选题】It’s a great pity that the girl ______ halfway and dropped out of the competition. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
gave off
B.
gave out prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
gave over
D.
gave up
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