【题目】在盛有一定量水的试管中缓慢加入浓硫酸,用玻璃棒不断搅拌,溶解后,用手触摸试管外壁时感觉到试管发烫,主要原因是_________________________________.
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【题目】 —I don’t have __________ money to buy the book. What about you?
—But I have __________ now. I can borrow you some.
A. some; some B. some; any C. any; any D. any; some
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【题目】 —Happy Halloween, Sandy!
—__________
A. Yes. I am very happy. B. Thanks. The same to you.
C. OK. You are right. D. Not at all.
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【题目】 Gina __________ TV every day. Sometimes her sister and she __________ a movie at the weekend.
A. watches; sees B. watch; sees
C. watches; see D. watch; see
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【题目】衣服上沾有碘很难洗净,碘在下列四种不同溶剂中的溶解性如下表所示:
溶质 | 碘 | |||
溶剂 | 水 | 酒精 | 汽油 | 苯(有毒) |
溶解性 | 微溶 | 可溶 | 易溶 | 易溶 |
由表中提供的信息判断,能最快洗净衣服上的碘污渍且对人体无害的是( )
A.水
B.酒精
C.汽油
D.苯
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【题目】关于溶液,下列说法正确的是 ( )
A. 一种溶剂中只能溶解一种溶质
B. 均一、稳定的液体一定是溶液
C. 食盐溶液与蔗糖溶液混合后仍为溶液
D. 同一种溶液中各部分的性质和浓度不一定相同
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【题目】按要求完成句子
【1】I did something special last summer. (改为否定句)
I______ ______ ______ special last summer.
【2】His last vacation was great. (对画线部分提问)
______ ______ his last vacation?
【3】I want to go somewhere quiet for my vacation. (改为一般疑问句)
______you want to go______ quiet for your vacation?
【4】The girl bought lots of clothes on the day of Double 11 last year.
(对画线部分提问)
______ ______the girl buy on the day of Double 11 last year?
【5】There are many wonderful places to visit in China. (改为同义句)
There are_____ ______ ______ wonderful places to visit in China.
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【题目】—Can Ihave a look at your photos,please? —_________.
A. Don't mention it B. I'm sorry to hear that
C. Sure,here you are D. I can't agree with you
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