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【简答题】
某兴趣小组在实验室模拟水厂将浑浊的湘江水净化成自来水,并最终制成蒸馏水,其实验流程如图所示: 请回答下列问题: ( 1 )加入明矾的作用是 加速沉降 ;操作 1 的名称是 过滤 。 ( 2 )利用如图所示的装置进行操作 2 ,此操作的作用是 除去色素和异味 待处理的水应该从 b 端通入(填 “a” 或 “b” ),理由是 净化效果更好 。 ( 3 )取少量的液体 D 于试管中,滴入肥皂水振荡,发现有较多 的浮渣产生,说明此液体为 硬水 (填 “ 软水 ” 或 “ 硬水 ” ),生 活中常用 煮沸 的方法软化硬水。 ( 4 )通过操作 3 可以得到净化程度较高的蒸馏水,操作 3 的名称 是 蒸馏 。
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【单选题】听力原文：W: I certainly hope that this film is worthwhile. My feet are freezing, and I can't stand the cold much longer. M: I hate standing in line anyway. If we don't get in soon, let's just forget it an...
A.
Watching a movie.
B.
In line at a museum.
C.
in line outside a movie house.
D.
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【简答题】Billy，a hard-working student，is four years old and in the ninth grade．He has a part-time job that 16 him up every morning at five o’clock，when most people are still 17 asleep．He is a newspaper boy...
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【单选题】近代中国,一些爱国人士提出过工业救国、教育救国、科学救国等主张,并进行过努力,但这些主张并不能从根本上给濒临危亡的中国指明正确的出路,这是因为他们没有认识到()
A.
争取民族独立和人民解放是实现民族复兴的前提
B.
中国已经被卷入世界资本主义经济体系和世界市场中
C.
中国是一个政治经济发展不平衡的国家
D.
资本主义制度已经过时
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【简答题】完形填空 阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。 Lisa is serious about the chores in her house, She gives her children thiings that they ___16___ do according to their ages. She started by asking John, the __...
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【简答题】Josh Morrison , 17 , dreamed of raising $100 , 000 to build a home for a low­income family.After years of hard work , his dream has come true.The house is now in the early stages of building. Six year...
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【简答题】看代码: Albums This group has no albums released, but they are recording one album right now. Tour Dates July 16th, 2014 @ 7:00pm House of Blues - Orlando, FL July 17th, 2014 @ 7:30pm Jannus Landing - T...
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【单选题】近代中国,一些爱国人士提出过工业救国、教育救国、科学救国等主张,并为此进行过努力,但这些主张并不能从根本上给濒临危亡的中国指明正确的出路,这是因为他们没有认识到
A.
中国已经被卷入世界资本主义经济体系和世界市场中
B.
中国是一个经济政治发展不平衡的国家
C.
资本主义制度已经过时
D.
争取民族独立和人民解放是实现民族复兴的前提
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【判断题】如果被检眼看到5.6.7三个钟点方向的线条都比较清晰，说明被检眼散光飘忽不定。
A.
正确
B.
错误
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【简答题】用括号内所给动词的适当形式填空，必要时可加助动词或情态动词。 Anna comes from Russia. She is 17 years old. She __1_（stay）with the Black family for a year. Anna comes to England because she wants to study English. She helps Mrs. Bl ...
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【单选题】That is the house ____ my father bought last year.
A.
where
B.
when
C.
whom
D.
which
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相关题目：
【单选题】听力原文：W: I certainly hope that this film is worthwhile. My feet are freezing, and I can't stand the cold much longer. M: I hate standing in line anyway. If we don't get in soon, let's just forget it an...
A.
Watching a movie.
B.
In line at a museum.
C.
in line outside a movie house.
D.
In the subway.
查看完整题目与答案
【简答题】Billy，a hard-working student，is four years old and in the ninth grade．He has a part-time job that 16 him up every morning at five o’clock，when most people are still 17 asleep．He is a newspaper boy...
查看完整题目与答案
【单选题】近代中国,一些爱国人士提出过工业救国、教育救国、科学救国等主张,并进行过努力,但这些主张并不能从根本上给濒临危亡的中国指明正确的出路,这是因为他们没有认识到()
A.
争取民族独立和人民解放是实现民族复兴的前提
B.
中国已经被卷入世界资本主义经济体系和世界市场中
C.
中国是一个政治经济发展不平衡的国家
D.
资本主义制度已经过时
查看完整题目与答案
【简答题】完形填空 阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。 Lisa is serious about the chores in her house, She gives her children thiings that they ___16___ do according to their ages. She started by asking John, the __...
查看完整题目与答案
【简答题】Josh Morrison , 17 , dreamed of raising $100 , 000 to build a home for a low­income family.After years of hard work , his dream has come true.The house is now in the early stages of building. Six year...
查看完整题目与答案
【简答题】看代码: Albums This group has no albums released, but they are recording one album right now. Tour Dates July 16th, 2014 @ 7:00pm House of Blues - Orlando, FL July 17th, 2014 @ 7:30pm Jannus Landing - T...
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【单选题】近代中国,一些爱国人士提出过工业救国、教育救国、科学救国等主张,并为此进行过努力,但这些主张并不能从根本上给濒临危亡的中国指明正确的出路,这是因为他们没有认识到
A.
中国已经被卷入世界资本主义经济体系和世界市场中
B.
中国是一个经济政治发展不平衡的国家
C.
资本主义制度已经过时
D.
争取民族独立和人民解放是实现民族复兴的前提
查看完整题目与答案
【判断题】如果被检眼看到5.6.7三个钟点方向的线条都比较清晰，说明被检眼散光飘忽不定。
A.
正确
B.
错误
查看完整题目与答案
【简答题】用括号内所给动词的适当形式填空，必要时可加助动词或情态动词。 Anna comes from Russia. She is 17 years old. She __1_（stay）with the Black family for a year. Anna comes to England because she wants to study English. She helps Mrs. Bl ...
查看完整题目与答案
【单选题】That is the house ____ my father bought last year.
A.
where
B.
when
C.
whom
D.
which
查看完整题目与答案
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