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【单选题】
Without my glasses I _____ into the wrong room.A.
blundered
B.
bustled
C.
burrowed
D.
burlesque
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举一反三
【单选题】若 x 3y = y 2x-5y = 6x-15y x ，则 4 x 2 -5xy+6 y 2 x 2 -2xy+3 y 2 的值是（ ）
A.
9 2
B.
9 4
C.
5
D.
6
【单选题】患者女,40岁。因患肺结核病,医嘱链霉素治疗,做链霉素皮试时发生过敏性休克而出现中枢神经系统症状,其原因是
A.
肺水肿
B.
肾衰竭
C.
脑组织缺氧
D.
有效循环血容量锐减
E.
毛细血管扩张，通透性增加
【单选题】He can speak English a native speaker.
A.
as good as
B.
better
C.
well than
D.
as well as
【单选题】Can Mr. Smith, _____ native language is English, speak Chinese fluently? [ ]
A.
whose
B.
whom
C.
that
D.
who
【单选题】The constitutional guarantee of free speech may have been aimed at protecting native speakers of English from censorship, but it is not a great ______ to interpret it as protecting the right to expres...
A.
mystery
B.
extension
C.
sacrifice
D.
condemnation
【单选题】下列运用等式的性质，变形正确的是（ ）
A.
若x=y，则x-5=y+5
B.
若a=b，则ac=bc
C.
若 a c = b c ，则2a=3b
D.
若x=y，则 x a = y a
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