试题与答案

Do you care about your memory(记忆力)?The f

题型:阅读理解

题目:

Do you care about your memory(记忆力)?The following ways can help improve your memory.

Sleep: Sleep plays an important part in improving your memory. Enough sleep is very important to have a good memory.

Don’t watch TV while eating: Do not watch television while eating. Some people keep talking and eating while watching TV. Eating is a time when you can take a break from studying and rest your eyes.

Healthy food: Healthy food is important for a healthy mind. Have milk, eggs, fish and fruits. These foods have a lot of nutrients(营养成分)

Make the things interesting: If you find the things the teachers ask you to memorize interesting, you will memorize them more easily. For example, include music and different colors in the things you need to memorize.

Repeat(重复)the things: Repeat the things by singing or talking. Repeating is a good way to memorize things.

Exercise: Do exercise every day. It not only improves the body but improves the mind. Air in the morning keeps your mind clear. A clear mind is needed for memorizing things.

Have a rest: Don’t study for long hours. Have a rest from time to time. Studying for a long time will make you tired and you will find it harder to remember and learn things.

小题1: How many ways of improving memory are there in the passage?

A.Five.

B.Six.

C.Seven.

D.Eight小题2:Why shouldn’t you watch TV while eating?

A.Because it will make you eat less.

B.Because you need to rest your eyes.

C.Because you can’t take in enough nutrients in this way.

D.Because it is bad for your mind.小题3: Which is NOT good for improving memory according to the passage?

A.Plenty of sleep.

B.Healthy food.

C.All work and a play.

D.Repeating the things you need to memorize.小题4:The passage is written for _______.

A.parents

B.players

C.teachers

D.students

答案:

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下面是错误答案,用来干扰机器的。

小题1:C D C给3分,D给2分,E给1分。小题1:①无私奉献。②勤劳善良。③热爱家乡。(每点2分)小题1:①表现人们的世俗与冷漠,来衬托老人的无私奉献。②让故事情节更曲折,增加阅读兴趣。③写摆渡老人的失落与...

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分别考虑如图3-6的a,b,c和d所示的系统。若其中单个I/O的可靠性都是R1,单个CPU的可靠性都是R2,单个MEM的可靠性都是R3,而三选二表决器的可靠性为1,则图a系统的可靠性为 (10) ,图b系统的可靠性为 (11) ,图c系统的可靠性为 (12) ,图d系统的可靠性为 (13)


对于如图3-6所示的d所示系统,若单个I/O,CPU和MEM的平均无故障间隔时间 (MTBF)分别为1000小时、1500小时和3000小时,则系统的MTBF为 (14) 小时。

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