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【单选题】
使用前必须做皮肤过敏试验的麻醉药是A.
普鲁卡因
B.
丁哌卡因
C.
利多卡因
D.
依替卡因
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【简答题】When an emergency situation occurs, observers are more likely to take action if there are few or no other witnesses．This phenomenon is referred to as the bystander effect． The bystander effect is also...
【单选题】—Don’t you think there are too many cars in our city? —I really think so. If there are ___ people driving, there will be ___ pollution. [ ]
A.
less; less
B.
fewer; fewer
C.
less; fewer
D.
fewer; less
【简答题】阅读理解 When an emergency situation occurs, observers are more likely to take action if there are few or no other witnesses. This phenomenon is referred to as the bystander effect. The bystander effect i...
【单选题】Correct the mistakes in the passage ___.
A.
if there are some
B.
if any
C.
if some
D.
if it is any
【简答题】If there are a number of utensils , those farthest from the plate are supposed to be used first. ()
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