问题 选择题

2009年8月15日,陕西省凤翔县政府新闻发布会宣布,东岭冶炼公司是导致凤翔县长青镇部分儿童血铅超标的主要原因。血铅超标,可致免疫力低下、学习困难、智商水平下降等症状。下列关于铅的说法正确的是    (    )

A.铅位于周期表中的第7周期、ⅣA

B.二氧化碳?二氧化铅均有很强的氧化性

C.与铅同主族的单质均能导电

D.在铅蓄电池中,负极电极方程式为:Pb + SO42--2e- =PbSO4

答案

答案:D

A:铅为第五周期第IVA族元素

B:二氧化碳的氧化性比较弱

C:金刚石不具有导电性

D:正确

完形填空

Two thieves came to a house to steal something. They dug a hole in the wall of the house.

There lived many mice in the house.The woman in the moonlight saw a mouse crawl(爬行)into the house,“Look! In comes one,”she said to the man in the house.The thief was so frightened that he hurriedly crawled out of the house and said to the one waiting outside, “She found me when I was just in.”But the thief outside       , so he said, “Let us two try to crawl into the house together.”At that time two mice happened to crawl into the house, too.The woman saw the mice and shouted,“In come two.Catch them!”The two thieves were terribly frightened.The man in the house said, “You saw them come in, but where are they?I will catch them tonight.”The two thieves started running away at once.

The two thieves wanted to make it clear whether they had been found or not the night before.The next day they acted as men selling sweet potatoes and came before the house.The man and the woman were ploughing(犁地)in their fields.The rein(缰绳)broke and the woman came home for a rope.She saw two men selling sweet potatoes and wanted to buy some.She picked out two which looked like mice.At the time the man couldn’t wait for her any longer in the fields and he ran back from the fields to hurry her upThe woman showed the sweet potatoes to the man and said.“How they look like the two of last night.” The man said,“I asked you to fetch a rope.Why don’t you hurry for it?” The two thieves ran away quickly without their sweet potatoes.

小题1:What is the writer’s purpose of telling the story?(within 10 words)

                                                                              

小题2:Which sentence in the passage is closest in meaning to the following one?

Quite by accident, two mice also came into the house at that very moment

                                                                               

小题3:Fill in the blank in the second paragraph with proper words or phrases to complete the sentence.(within 10 words)

                                                                               

小题4:Why did the two thieves came before the house the next day?(within 20 words)

                                                                                

小题5:Translate the underlined sentence in the last paragraph into Chinese.

                                                                                

单项选择题