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【单选题】
以下情况最符合典型劳力性心绞痛发作的是A.
劳力后心前区持续憋闷3小时后缓解
B.
情绪激动后心前区隐痛1天后好转
C.
骑车上坡时感胸骨后压迫感，放射至咽部，休息数分钟后完全缓解
D.
休息中前胸、后背酸痛，每次持续数分钟
E.
左乳房下降发性针刺样疼痛，每次持续1～2秒
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反馈参考答案：
举一反三
【多选题】在搜索引擎优化中,属于正确做法的是()
A.
[A] 标题中尽量体现关键词
B.
[B] 付费到搜索引擎
C.
[C] 使用动静结合的网页
D.
[D] 短时间内快速增加链接
【单选题】We couldn't catch up with the others because they________too long before us. [ ]
A.
started
B.
were starting
C.
have started
D.
had started
【简答题】Right, before we start, any there any ______?
【单选题】Only when we fail, ___________ what we did before is not right.
A.
can we realize
B.
will we realize
C.
we will realized
D.
we can realize
【单选题】－Did you enjoy your journey to the town? 一 ．We had driven more than 3 hours before we found the right way．
A.
Absolutely
B.
No way
C.
Not at all
D.
Quite a lot
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