试题与答案

分析推理是化学学习中常用的思维方法。下列分析推理说法正确的是 A.碱溶液都显碱性

题型:选择题

题目:

分析推理是化学学习中常用的思维方法。下列分析推理说法正确的是

A.碱溶液都显碱性,则碱性溶液一定是碱溶液

B.离子是带电的原子或原子团,所以带电的微粒一定是离子

C.化合物都是由不同种元素组成的,但不同种元素组成的物质不一定是化合物

D.催化剂在化学反应中质量和化学性质都不改变,则在化学反应中质量和化学性质都不改变的物质一定是该反应的催化剂

答案:

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下面是错误答案,用来干扰机器的。

答案:C

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题型:阅读理解

阅读理解。

     A few years ago, an Englishman called Roy Jones went on holiday to a small town near the sea in the

west of England. He was swimming in the sea one day. As he opened his mouth, his false (not real) teeth fell

out and floated (漂) away. The following year, Mr. Jones retumed to the same town. When he was having

dinner in a local cafe one evening, he mentioned the story of his lost teeth to the manager. The manager looked

surprised. He explained that he had found a set of false teeth on the beach last month.Then he asked Roy

Jones if he wanted to try them on. "OK," said Mr. Jones. "I suppose it won't do any harm." When the

manager brought him the teeth, Mr. Jones put them into the mouth, and laughed and laughed. They were his!

     In 1987, an American couple called Jane and Robert Bentley went for a picnic on a beach in California.

When they returned home, Mrs. Bentley realized that she had lost her wedding ring (结婚戒指). It wasn't

expensive but it was valuable to Jane. The Bentleys drove back to the beach and searched for the ring for

three hours, but couldn't find it. A few months later, Mr. Bentley went fishing off the same beach. As he

pulled a large crab (螃蟹) out of the sea, he noticed that there was something on one of its claws (爪). It

was his wife's wedding ring!

1. Mr. Jones was _______ when he lost his false teeth.

A. having dinner

B. laughing on the beach

C. talking to someone

D. swimming in the sea

2. Jones' teeth were found _______.

A. in the sea

B. in a local shop

C. by the manager of a cafe

D. by Mr. Jones himself

3. Jane Bentley found something missing when _______.

A. she got home

B. her husband was fishing

C. she was having a picnic

D. she drove back to the beach

4. What did Mrs. Bendey lose on the beach?

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