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【单选题】
救助者胸外按压时应该把手掌放在胸部正中双乳头之间的胸骨上,另一只手平行重叠压在其手背上。( )A.
是
B.
否
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举一反三
【单选题】Ralph Waldo Emerson and Henry David Thoreau are great environmentalists.
A.
Y
B.
N
C.
NG
【单选题】Walden was written by
A.
Henry David Thoreau.
B.
Ralph Waldo Emerson.
C.
Henry Wadsworth Longfellow.
D.
James Russell Lowell.
【简答题】Match the best choice from A to F according to what you hear. ( )1. Lingling ( )2. Henry ( )3. David ( )4. Xiaoming A. joins the stamp collectors' club. B. is more interested in basket...
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