【题目】下列措施中,不能防止铁制品锈蚀的是( )
A.喷漆 B.镀一层耐腐蚀的金属
C.制成不锈钢 D.存放在潮湿的空气中
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【题目】对分子的叙述中正确的是( )。
A.分于是保持物质性质的一种粒子
B.分子是保持物质性质的最小粒子
C.分子是保持物质化学性质的最小粒子
D.分子是保持物质化学性质的唯一粒子
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【题目】D
Jack likes eggs, bananas and apples. So every day, he has two eggs, one apple, a cup of milk and some bread for breakfast. For lunch, he has bananas, some chicken and vegetables. And for dinner, he has tomatoes, French fries and ice cream.
His sister likes dessert, oranges and apples. But she often has some hamburgers, one apple and bread for her breakfast. She likes tomatoes, salad and some fish for lunch. For dinner, she likes strawberries and some chicken.
【1】 What does Jack have for breakfast?
A. Some hamburgers, one apple and bread.
B. Bananas, one egg and a cup of milk.
C. Two eggs, one apple and a cup of milk.
D. One apple, two eggs, some bread and a cup of milk.
【2】_________ likes dessert, oranges and apples.
A. Jack B. Jack’s mother
C. Jack’s father D. Jack’s sister
【3】Jack has _________ for his dinner.
A. tomatoes B. French fries and ice cream
C. bananas and some chicken D. both A and B
【4】Jack has some chicken _________, but his sister has some chicken _________.
A. for breakfast; for dinner B. for lunch; for dinner
C. for dinner; for lunch D. for dinner; for dinner
【5】Which of the following is right?
A. Jack likes dessert, but he doesn’t like apples.
B. Jack likes apples, and his sister likes them, too.
C. Jack has two eggs for breakfast, but his sister has one egg.
D. Jack has bananas for lunch, and his sister has apples for lunch.
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【题目】 —You look very cool today, Simon.
—__________
A. Really? Thank you. B. Oh, I don’t think so.
C. No, I’m not cool at all. D. The same to you.
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【题目】铁生锈的条件是_____________并存,铁锈的主要成分是_________,铁锈是一种混合物,铁生就后变得疏松多孔,因而不能阻止铁继续被锈蚀,破坏铁生锈的条件就能防止铁生锈。
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【题目】Andy __________ chats with his friends after class because he is busy doing his homework.
A. always B. usually C. seldom D. often
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【题目】下列有关金属材料的叙述错误的是( )
A.回收利用废旧电池中的铅、汞等可减少对环境的污染
B.铝块能制成铝箔是利用了铝的延展性
C.铝比钢铁中的铁活泼,因而铝的抗腐蚀性能比铁差
D.在铁制品表面刷漆或镀耐腐蚀金属都可以防止铁制品锈蚀
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科目:初中地理 来源: 题型:
【题目】某同学进行“物质溶解时的吸热或放热”的探究实验:他取三支试管,向试管中分别注入5mL水,测得水的初温为20℃,再分别向三支试管中各加入3g氢氧化钠、氯化钠、硝酸铵固体,振荡。
(1)“振荡”试管的目的是__________________________________________________.
(2)用温度计分别测出三支试管中溶液的温度,高于20℃的是_______________溶液,这是因为____________________________________________________________.
(3)装有硝酸铵溶液的试管外壁有水珠产生,原因是_____________________________.
(4)由此实验探究可知___________溶于水温度没有明显的变化。
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科目:初中地理 来源: 题型:
【题目】补全对话(5小题,每小题2分,共10分)
读下面的短文,在空白处填上合适的单词或句子,使短文意思通顺合理、结构完整。
W: Good morning. Can I help you?
M: 1. ___________ I want to buy a T-shirt for my son.
W: Oh, 2. ___________
M: Black.
W: 3. ___________
M: It looks very nice.
W: The T-shirts are on sale now.
M: 4. ___________
W: $20.
M: OK, I’ll take it.
W: Here you are.
M: 5. ___________
W: You are welcome.
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