问题 单项选择题

第二次世界大战期间,海洋上航行的商船常常遭到轰炸机的袭击,许多商船都先后在船上架设了高射炮。但是,商船在海上摇晃得比较厉害,用高射炮射击天上的飞机是难命中的。战争结束后,研究人员发现,从整个战争期间架设过高射炮的商船的统计资料看,击落敌机的命中率只有C%。因此,研究人员认为,商船上架设高射炮是得不偿失的。以下哪个如果为真,最能削弱上述研究人员的结论

A.在战争期间,未架设高射炮的商船,被击沉的比例高达B5%;而架设了高射炮的商船,被击沉的比例只有不到A0%

B.架设了高射炮的商船,即使不能将敌机击中,在某些情况下也可能将敌机吓跑

C.架设高射炮的费用是一笔不小的投入,而且在战争结束后,为了运行的效率,还要在花费资金将高射炮拆除。

D.一般来说,上述商船用于高射炮的费用,只占整个商船的总价值的极少部分

答案

参考答案:D

解析:排除N、0,首先一定要选择M、K、L;由于有K,还可以推出必有u;因为有M,推出有R;只有T不能确定.

单项选择题 共用题干题
阅读理解

An old man lived with his family. The family would eat together nightly at the dinner table. But the elderly grandfather’s shaky hands and failing sight made eating rather difficult. Peas rolled off his spoon, dropping to the floor. When he grasped his glass of milk, it often spilled clumsily(笨拙地) at the tablecloth.

With this happening almost every night, the son and daughter-in-law became annoyed with the mess.

“We must do something about grandfather,” said the son.

“I’ve had enough of his milk spilling, noisy eating and food on the floor,” the daughter-in-law agreed.

So the couple set a small table at the corner.

There, grandfather ate alone while the rest of the family enjoyed their dinner at the dinner table. Since grandfather had broken a dish or two, his food was served in wooden bowls. Sometimes when the family looked in grandfather’s direction, he had tears in his eyes as he ate alone. Still, the only words the couple had for him were sharp warnings when he dropped a fork or spilled food. The four-year-old watched it all in silence.

One evening, before supper, the father noticed his son playing with wood pieces on the floor. He asked the child sweetly, “What are you making?” Just as sweetly, the boy replied, “Oh, I’m making a little bowl for you and mama to eat your food from when I grow up.” The four-year-old smiled and went back to work.

These words so struck the parents that they were speechless. Then tears streamed down their cheeks. Though no words were spoken, both knew what must be done.

小题1:Eating was difficult for the grandfather because ________.

A.his son and daughter-in-law didn’t like him

B.there wasn’t enough food for him

C.life was hard for the poor family

D.he was old and weak小题2:The couple served the old man’s food in wooden bowls to ________.

A.show how sick they felt of the old man

B.make the old man’s food more enjoyable

C.prevent the old man from breaking more dishes

D.encourage their son to make more wooden bowls小题3:What would the end of the story be like?

A.The couple gave their son a good beating.

B.No more milk was spilled by the old man.

C.The old man had every meal with the family.

D.The whole family started to use wooden bowls.