问题 选择题

化学与生活、生产密切相关,下列说法或做法正确的是(  )

A.同时向土壤中施加碳酸铵和熟石灰,既施加氮肥,又可降低土壤酸性

B.利用活性炭作除味剂去冰箱里的异味

C.用甲醛溶液浸泡水产品防止变质

D.厨房中燃气泄漏时,赶紧打开排气扇排气

答案

A、铵态氮肥与碱性物质混合后能放出氨气,降低肥效;碳酸铵属于铵态氮肥,熟石灰显碱性,不能混合施用,故选项说法错误.

B、活性炭具有吸附作用,能吸附异味和色素,能除去冰箱里的异味,故选项说法正确.

C、甲醛有毒,能破坏人体蛋白质的结构,使蛋白质变性,不能用甲醛溶液浸泡水产品,故选项说法错误.

D、燃气具有可燃性,泄露遇明火或电火花可能发生爆炸;厨房中燃气泄漏时,不能打开排气扇排气,以防发生爆炸,故选项说法错误.

故选B.

单项选择题
阅读理解

第三部分:阅读理解(共20小题,每题2分,满分40分)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

One winter evening, a storekeeper was going to close up  his shop. Suddenly he saw Seth, a lazy, good – for – nothing fellow grasp a pound of fresh butter and hid it in his hat. No sooner had the storekeeper seen the act than he hit upon exactly the right revenge(报复). He would punish the thief, and satisfy his own appetite for fun.     

Seth had his hat on his head, and the butter in his hat. He was anxious to leave. However, the rightful owner of the butter offered him a cup of hot drink, took him by the shoulders and planted him in a seat close to the stove. The grocer filled in the stove as many sticks of wood as he could. Seth already could feel the butter settling down closer to his hair, so he jumped up, declaring that he must go. “Sit down; don’t be in such a hurry,” replied the grocer, pushing him back into the chair again.      

Streak after streak of the butter came pouring from under the poor man’s hat. The fun-loving grocer kept on putting wood into the stove. Then, as if surprised, he remarked, “You seem to be sweating as if you were warm! Let me put your hat away for you.”     

“No! ” exclaimed poor Seth at last, unable to stand it a moment longer. “ No, I must go; let me out.” A greasy (油腻的) waterfall of butter was now pouring down the poor man’s face and neck, dipping into his clothes, and trickling down his body into his boots. He was bathed in oil from head to toe. Just as Seth rushed out of the door, the grocer said , “ I believe the fun I’ve had out of you is worth the money, so I shan’t charge you for that pound of butter in your hat.”

56.Why did Seth put the butter in his hat?

A.Because he didn’t want to pay for it.

B.Because he just wanted to play a trick on the grocer.

C.Because he wanted to revenge himself on the grocer.

D.Because he had nowhere to put the butter but in the hat.

57.What is not the action that the grocer took as a revenge?

A.The grocer offered Seth a cup of hot drink.

B.The grocer offered to take off Seth’s hat.

C.The grocer overcharged Seth for the butter.

D.The grocer forced Seth to take a seat near the stove.

58.What was the purpose of the grocer’s hospitality(热情好客)?

A.He wanted to be kind to him.

B.He wanted to sell more of his goods.

C.He wanted to make friends with Seth

D.He wanted to take his revenge on Seth by making the butter in his hat melt.

59.What is the best title of the passage?

A.Great Fun                     B.The Right Revenge

C.A Fun-loving Grocer            D.A Foolish Customer