皮皮学，免费搜题
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搜题
【单选题】
吗啡急性中毒引起的呼吸抑制首选的中枢兴奋药是A.
尼可刹米
B.
咖啡因
C.
洛贝林
D.
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皮皮学刷刷变学霸
举一反三
【单选题】From the passage we know that ______.
A.
the school was situated in Washington's Black ghetto
B.
Joyce was a young successful music teacher
C.
the Music Festival in Vienna is to be held on April every year
D.
most of Joyce's pupils decided to raise money for the trip
【单选题】We were to the school bus to get to the museum, but it was broken, so we had to take the subway.
A.
take
B.
have taken
C.
to be taking
D.
to have been taking
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