【題目】下列措施中，不能防止鐵制品銹蝕的是（ ）
A.噴漆 B.鍍一層耐腐蝕的金屬
C.制成不銹鋼 D.存放在潮濕的空氣中
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【題目】對分子的敘述中正確的是( )。
A．分于是保持物質性質的一種粒子
B．分子是保持物質性質的最小粒子
C．分子是保持物質化學性質的最小粒子
D．分子是保持物質化學性質的唯一粒子
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【題目】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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【題目】 —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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【題目】鐵生銹的條件是_____________并存，鐵銹的主要成分是_________，鐵銹是一種混合物，鐵生就后變得疏松多孔，因而不能阻止鐵繼續被銹蝕，破壞鐵生銹的條件就能防止鐵生銹。
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【題目】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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【題目】下列有關金屬材料的敘述錯誤的是（ ）
A．回收利用廢舊電池中的鉛、汞等可減少對環境的污染
B．鋁塊能制成鋁箔是利用了鋁的延展性
C．鋁比鋼鐵中的鐵活潑，因而鋁的抗腐蝕性能比鐵差
D．在鐵制品表面刷漆或鍍耐腐蝕金屬都可以防止鐵制品銹蝕
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【題目】某同學進行“物質溶解時的吸熱或放熱”的探究實驗：他取三支試管，向試管中分別注入5mL水，測得水的初溫為20℃，再分別向三支試管中各加入3g氫氧化鈉、氯化鈉、硝酸銨固體，振蕩。
（1）“振蕩”試管的目的是__________________________________________________.
（2）用溫度計分別測出三支試管中溶液的溫度，高于20℃的是_______________溶液，這是因為____________________________________________________________.
（3）裝有硝酸銨溶液的試管外壁有水珠產生，原因是_____________________________.
（4）由此實驗探究可知___________溶于水溫度沒有明顯的變化。
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【題目】補全對話（5小題，每小題2分，共10分）
讀下面的短文，在空白處填上合適的單詞或句子，使短文意思通順合理、結構完整。
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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