单项选择题

The trees ________ in the typhoon are telling passengers that they should stay at home.
A、swaying
B、shuttling
C、swinging
D、splitting

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单项选择题
Only when your identity has been checked, ______. A. you are allowed in B. you wilt be allowed in C. will you allow in D. will you be allowed in
多项选择题
肺通气 灌注显像诊断肺栓塞的临床价值在于 A.肺灌注显像阴性可除外肺动脉栓塞的可能 B.两者均为“阳性”匹配可诊断为肺栓塞 C.两者均为“阴性”匹配可诊断为COPD D.肺通气显像阴性可以除外肺栓塞的可能 E.两者结果不匹配多提示肺栓塞可能
A.肺灌注显像阴性可除外肺动脉栓塞的可能
B.两者均为“阳性”匹配可诊断为肺栓塞
C.两者均为“阴性”匹配可诊断为COPD
D.肺通气显像阴性可以除外肺栓塞的可能
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