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【简答题】
受体激动剂的特点是() A对受体无亲和力，有内在活性 B对受体有亲和力，有内在活性 C对受体有亲和力，无内在活性 D对受体无亲和力，无内在活性 E能使受体变性失去活性
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举一反三
【单选题】九年(1)班同学在准备以建国七十周年辉煌的经济建设成就为主题的黑板报。下列可作为该板报素材的有 1第一颗原子弹成功爆炸 2外汇储备连续多年居世界第一 3中国成为世界第二大经济体 4我国已建成社会主义法治国家
A.
①②
B.
①④
C.
②③
D.
③④
【单选题】听力原文： 'Go to the playground and have fun,' parents will often say to their kids. But they should remember playgrounds can be dangerous. Each year about 200,000 children end up in hospital emergency ro...
A.
Children don't get enough education safety.
B.
Children are keen on dangerous games.
C.
The playgrounds are in poor condition.
D.
The playgrounds are overcrowded.
【简答题】阅读理解。 One day at a park, a woman sat down next to a man on a bench (长椅) near a playground. “That’s my son over there,” she said, pointing to (指着) a little boy in a red sweater. 'He’s a lovely boy,” th...
【单选题】听力原文： 'Go to the playground and have fun,' parents will often say to their kids. But they should remember: playgrounds can be dangerous. Each year, about 200,000 children end up in hospital emergency ...
A.
Children don't get enough education in safety.
B.
Children are keen on dangerous games.
C.
The playgrounds are in poor condition.
D.
The playgrounds are overcrowded.
【单选题】听力原文： 'Go to the playground and have fun.' Parents will often say to their kids. But they should remember playgrounds can be dangerous. Each year about 200,000 children end up in hospital emergency ro...
A.
Children don't get enough education in safety.
B.
The playgrounds are in poor condition.
C.
The playgrounds are overcrowded.
D.
Children are keen on dangerous games.
【单选题】九年( 1 )班同学打算出一期 “改革开放铸就辉煌”主题黑板报。下列可以作为该板报素材的有 1第一颗原子弹成功爆炸 2外汇储备连续多年位居世界第一 3中国成为世界第二大经济体 4我国已建成社会主义法治国家
A.
①②
B.
①④
C.
②③
D.
③④
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