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【多选题】
听觉的功能在于分辨声音的高低和强弱，以及判断环境中声源的远近。听觉的绝对阈限是人的听觉系统感受到最弱声音和痛觉声音的强度。包括（）阈值。
A.
频率
B.
辨别
C.
声压
D.
声音
E.
声强
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举一反三
【单选题】Which of the following is TRUE according to the passage?
A.
People are now trying to find ways to make noise as low as possible.
B.
Only recently did people realize the harmful effect of noise.
C.
Noise pollution is the worst kind of pollution we suffer from.
D.
The writer thinks that it is almost impossible for people to avoid noise.
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【简答题】由四个音按照三度关系叠置起来的和弦,叫____,原位七和弦从低到高各音分别叫____音、____音、____音、____音。
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【多选题】下列关于疥疮的防治描述正确的有（）
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患者可不隔离，有接触的家庭成员一般不需治疗
B.
污染物品应曝晒或煮沸以杀灭疥螨
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【单选题】被脂砚斋评为“悲壮之极,北曲中不能多得”的是哪一首曲子?()
A.
《终身误》
B.
《枉凝眉》
C.
《乐中悲》
D.
《寄生草》
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【简答题】阅读理解。 There are many things we need to know that we don't learn at school. For example, if we want to use our money wisely, we need to shop carefully. We need to know how to compare (比较) the prices of...
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【单选题】What did Polly receive from Mrs. Fowler?
A.
A gift.
B.
A letter.
C.
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【单选题】What did Polly think of the boy's name?
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It was funny.
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【简答题】Now, most people have watches. As we know, Switzerland（瑞士） is famous for its watches. __ _ , the watch was not _ in this country. It was the British who did. Many years ago, an Englishman traveled to ...
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【单选题】下列关于疥疮的叙述，正确的是（）
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传染性极强，夏季多见
B.
好发于头面部、头发和掌跖部
C.
皮损处有灰白色、浅黑色或普通皮色的隧道
D.
病人常有奇痒，遇冷会加重
E.
刮取皮损部位，不能找到疥螨或虫卵
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【单选题】Which of the following is TRUE according to the passage?
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People are now trying to find ways to make noise as low as possible.
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【多选题】下列关于疥疮的防治描述正确的有（）
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患者可不隔离，有接触的家庭成员一般不需治疗
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【单选题】被脂砚斋评为“悲壮之极,北曲中不能多得”的是哪一首曲子?()
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查看完整题目与答案
【单选题】What did Polly receive from Mrs. Fowler?
A.
A gift.
B.
A letter.
C.
A bag.
查看完整题目与答案
【单选题】What did Polly think of the boy's name?
A.
It was funny.
B.
It was boring.
C.
It was unusual.
查看完整题目与答案
【简答题】Now, most people have watches. As we know, Switzerland（瑞士） is famous for its watches. __ _ , the watch was not _ in this country. It was the British who did. Many years ago, an Englishman traveled to ...
查看完整题目与答案
【单选题】下列关于疥疮的叙述，正确的是（）
A.
传染性极强，夏季多见
B.
好发于头面部、头发和掌跖部
C.
皮损处有灰白色、浅黑色或普通皮色的隧道
D.
病人常有奇痒，遇冷会加重
E.
刮取皮损部位，不能找到疥螨或虫卵
查看完整题目与答案