组卷网 > 初中英语综合库 > 主题 > 人与社会 > 科普知识与现代技术 > 科普知识
题型:完形填空 难度:0.65 引用次数:220 题号:14570860

Diamonds are the most famous and valuable jewel (珠宝) in the world. It is difficult to cut a diamond because it is the _______ substance (物质) found in nature. The diamond is believed to be the symbol of wealth (财富的象征) for its great _______. Also, it has the meaning of eternity (永恒), so diamond rings are _______ used as wedding jewelry.

When a volcano (火山) _______, it sometimes erupts (爆发) and causes great damage to the nearby towns. However, at the same _______, diamonds were pushed towards the surface of the Earth. Thus, it may be _______ to find a diamond after a volcanic eruption. Besides, diamonds are also found among the sand and stones of certain river beds because the rain _______ them down the mountain sides.

There are not many places that _______ diamonds in the world. During the last century, adventurers from Europe went to Brazil, because they heard that there were diamonds in the Amazon River. Many of these early diamond miners _______ illness or were lost forever in the great forests. But some ________ home rich.

The earliest known diamonds were found in India many centuries ago. But most of the world’s diamonds now come from the Congo, Tanzania and South Africa.

1.
A.weakestB.simplestC.hardestD.darkest
2.
A.valueB.colourC.lightD.smell
3.
A.secretlyB.widelyC.hardlyD.quietly
4.
A.activeB.specialC.relaxedD.missing
5.
A.markB.timeC.stepD.chance
6.
A.importantB.difficultC.happyD.possible
7.
A.cutB.slowedC.washedD.turned
8.
A.borrowB.produceC.spendD.collect
9.
A.talked aboutB.picked upC.took awayD.died of
10.
A.stayedB.builtC.returnedD.brought

相似题推荐

完形填空(约200词) | 适中 (0.65)
名校
文章大意:本文主要讲述了现在几乎人人手中都有一部手机,但是,手机对我们的身体有害处。一项研究表明,过多得使用手机能够使人失聪。

【推荐1】There are two sides of a mobile phone. At present, almost everyone has a mobile phone, but have you ever thought that cell phone might be ________ for your health? A study ________ that heavy mobile phone use may cause phones hearing loss (损耗;损失).

This study shows that people who use cell phones for about an hour a day have a shorter time ________ some similar sounds, ________ in their right ears. It is getting harder for ________ to tell the difference ________ the sounds of “s” and “f”, and “t” and “z”.

Researchers studied 100 people who ________ cell phones, and compared (比较) them with 50 people who did not. The study lasted for 12 months. ________ the researchers found was that cell phone users had more hearing ________ than those who did not use cell phones.

Besides this, our ears have many little ________ inside them. Too much noise will cause these hairs to get weak and finally ________. When these hairs die, it affects (影响) our ability to listen. ________, cell phone users don’t care too much ________ this study. One man said, “I’d be more worried about people who ________ MP3 players. They put those earphones in their ears and listen to very ________ music. I think that is more likely to cause hearing loss than a cell phone.”

1.
A.goodB.fineC.badD.well
2.
A.showsB.tellsC.thinksD.gets
3.
A.sayingB.watchingC.hearingD.talking
4.
A.easilyB.especiallyC.suddenlyD.carefully
5.
A.herB.youC.himD.them
6.
A.duringB.betweenC.inD.at
7.
A.usedB.useC.wroteD.write
8.
A.WhyB.WhichC.WhoD.What
9.
A.surpriseB.rulesC.problemsD.words
10.
A.hairsB.painsC.soundsD.blood
11.
A.liveB.aliveC.riseD.die
12.
A.All in allB.HoweverC.FirstlyD.Finally
13.
A.toB.withC.aboutD.of
14.
A.buyB.useC.discoverD.see
15.
A.beautifulB.softC.loudD.light
2022-02-25更新 | 110次组卷
完形填空(约250词) | 适中 (0.65)

【推荐2】Man began to make use of fire long long ago. Fire is useful in many ways, but sometimes it is dangerous. If you are not careful with it, it can burn things or ______ hurt you. A big fire can burn forests and tall buildings. Sometimes a piece of thin paper can ______ a big fire. So please remember ______ in the dry places like woods and forests ______ throw a cigarette end on the grass and it's also important for you ______ the candles in the right place.

But if there is a fire in our building, what should we do with it? The following advice can help you get outside safely. Smoke from a fire can make ______ hard to see where things are. So it's important to remember the ______ out of your home. Pour some water over your clothes. What's more, put a wet towel (毛巾) over your mouth and your nose to keep the ______   out. Then go to the fire exit (安全出口). Try to stay low to go to the exit so that you'll breathe ______ smoke. Studies show that smoke usually hurt more people in a fire. You'd better run away from the fire as ______ as you can. But you ______ rush! Or you may fall over and hurt ______ or others. Of course you should also call 119. ______ the phone you should clearly tell the firemen ______ the fire is to help them get there without difficulty. By the way, don't jump out of the window. Jumping ______ more dangerous than the fire.

Keep ourselves away from fire and safety is above all!

1.
A.alwaysB.stillC.even
2.
A.changeB.causeC.caused
3.
A.not smokeB.not to smokeC.don't smoke
4.
A.andB.orC.but
5.
A.putB.puttingC.to put
6.
A.itB.thisC.that
7.
A.waysB.thingsC.shapes
8.
A.airB.smokeC.fire
9.
A.moreB.fewC.less
10.
A.quicklyB.slowlyC.early
11.
A.can'tB.needn'tC.mustn't
12.
A.youB.yoursC.yourself
13.
A.InB.OnC.At
14.
A.whereB.whenC.how
15.
A.perhapsB.may beC.maybe
2020-10-16更新 | 113次组卷
完形填空(约220词) | 适中 (0.65)
【推荐3】What does “self-control” mean? Suppose you have a ticket for an exciting film which you want to see very much, but unluckily you have to study ____ an exam tomorrow. What will you do? See the film ____ study for the exam? If you can give up seeing the film and work hard at your ____, it means that you have self-control. Self-control is not something that you have at birth. It needs to be cultivated in your life.
Often, young children are easily ____ when their needs or wishes are not met at once. Almost daily, children see a lot of food, toys and activities that are attractive to them. Many time children do not know how to ____ their frustration(挫折) when they are told “no” or “later”. Also, sometimes young children do not understand ____ they are not allowed to do anything. In order to have positive experiences at home and at school, children need to learn ____ to properly deal with their feelings when they cannot have something. These skills will increase children’s self- control.
Don’t go to bed late because of a nice TV program, or you may go to school ____ and it is a waste of time. Every one of us has some hobbies, a few of which may ____ us from making progress in life. We must use our ____ to become free of them.1.
A.forB.atC.onD.about
2.
A.andB.whileC.butD.or
3.
A.schoolB.lessonsC.filmsD.listening
4.
A.happyB.upsetC.tiredD.excited
5.
A.begin withB.play withC.deal withD.do with
6.
A.whatB.whichC.whyD.who
7.
A.skillsB.lessonsC.waysD.strategies
8.
A.earlyB.lateC.on timeD.slowly
9.
A.leaveB.makeC.keepD.push
10.
A.decisionB.energyC.knowledgeD.self-control
2014-11-10更新 | 214次组卷
共计 平均难度:一般