问题 填空题

化学与生活息息相关,请你用化学知识回答以下生活中的问题:

(1)碘酒是家庭常备药,碘酒中的溶剂是                (写化学式)。

(2)炎热的夏季自行车车胎容易爆裂, 原因是                       

(3)铝制品抗腐蚀性能很好,原理是                  (用化学方程式表示)。

(4)现有①黄瓜②豆腐③馒头④鸡蛋,其中富含蛋白质的是              (填序号)。

答案

(1)C2H5OH(或C2H6O)    (2)分子间的距离随温度升高而增大

(3)4Al + 3O2=2Al2O3             (4)②④

(1)碘酒中的溶剂是酒精,酒精的化学式为C2H5OH

(2)分子间的距离随温度升高而增大,所以炎热的夏季自行车车胎容易爆裂,

(3)铝制品抗腐蚀性能很好,是因为铝能与氧气反应生成一层致密的氧化膜,从而阻止铝进一步被腐蚀。

(4)鸡蛋、豆腐富含蛋白质,黄瓜富含维生素,馒头富含糖。

阅读理解

第三部分:阅读理解(共20小题;每小题2分,满分40分)

第一节(共15小题;每小题2分,满分30分)

A

There was once a professor of medicine, who was very strict with the students. Whenever he took the chair on the exam committee(委员会), the students would be in fear , because he was seldom pleased with the answers they gave . A student would be lucky enough if he or she could receive a good mark from him. At the end of the term, the students of medicine would take their exam again . Now a student entered the exam room and got seated before the committee. This student was a little nervous as he knew it would not be so easy to get through the exam at all.

The professor began to ask. The student was required to describe a certain illness, his description of which turned out to be OK.

Then the professor asked about the cure(药剂,疗法)for the illness , and the student , too , answered just as right . “Good,” said the professor, “and how much will you give the patient?”

“A full spoon,” answered the student.

“Now you may go out and wait for what you can get,” said the professor. At the same time the committee discussed carefully the answers the student had given .Suddenly the student noticed that there was something wrong with his last answer. “A full spoon is too much,” he thought to himself. Anxiously he opened the door of the room and cried, “Mr. Professor, I’ve made a mistake! A full spoon is too much for the patient. He can take only five drops. ”

“I’m sorry, sir,” said the professor coldly, “but it’s too late. Your patient has died. ”

56. The students were afraid of the professor because _______ .

A. they often angered and disappointed him

B. their answers often astonished him

C. their answers seldom satisfied him

D. he often misunderstood them and gave them bad marks

57. The student’s description of the illness was ________ .

A. not correct                        B. not satisfying

C. completely discouraging        D. accepted

58 Which guess is the most reasonable from the passage?

A. The student must have passed the exam.

B. The student may not have passed the exam.

C. The student must have been very happy when he heard, “Your patient has died . ”

D. The professor must have been very pleased and given the student a good mark.

单项选择题 B1型题