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【单选题】
吗啡中毒致死的原因是A.
昏迷
B.
针尖样瞳孔
C.
血压下降
D.
呼吸麻痹
E.
内脏绞痛
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反馈参考答案：
举一反三
【单选题】Plenty of fresh air __________to good health.
A.
refers
B.
contributes
C.
appl ie s
D.
leads
【单选题】Plenty of fresh air to good health. That is why many people like to take a walk in the morning.
A.
contributes
B.
attributes
C.
benefits
D.
constitutes
【简答题】Amanda has had an operation and needs plenty of fresh air to help her recover. She wants to find a short, quiet walk with a beautiful place to visit on the route.
【单选题】Plenty of fresh air _________ good health.
A.
contributes to
B.
contribution to
C.
contributes for
D.
contribution for
【单选题】Plenty of fresh air __________to good health.
A.
refers
B.
applies
C.
contributes
D.
leads
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