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题型:完形填空 题类:常考题 难易度:普通

四川省潼江中学2017届九年级下学期英语入学考试试卷

完形填空。

Dear human beings,

    Hi! I'm 80 years old now. So I've seen 1 of the world. We've lived on Earth with you thousands of years. Each day we release(释放) O2 and remove harmful gas so that you have fresh 2; we help prevent the Earth's soil(土壤)from being washed away, and above all, we give all kinds of fruits, nuts, beans as well as 3 to you.

    We are now in great 4 because of you. You are killing us at a terrible speed. You are burning and cutting down millions of us each year, but you're not 5enough. For every tree being planted today, 30 trees are being cut down. What would you do if all of us 6? Perhaps you would die, too.7 us, you wouldn't get enough material for buildings, furniture(家具), paper products, and your cities would 8ugly. Moreover, air pollution and noise pollution would become more and more serious, and your life would become nasty.

    The 9 thing for you to do now is to stop your bad manner. We are the best fighters 10 pollution and we are your best friends!  

Your friend,

An old tree

(1)
A、some B、many C、most D、much
(2)
A、water B、air C、food D、oil
(3)
A、wood B、cool C、green D、home
(4)
A、situation B、condition C、need D、danger
(5)
A、growing B、saving C、planting D、producing
(6)
A、left B、refused C、died D、won
(7)
A、With B、Without C、By D、Between
(8)
A、look B、seem C、smell D、fall
(9)
A、everyday B、best C、last D、polite
(10)
A、for B、from C、against D、off
举一反三
阅读短文及文后A~E选项,选出可以填入各题空白处的最佳选项。

    We live on the earth. We use the sea around us. What do we take from the ocean? And what do we give to it?

    We take fishes from the ocean—millions of kilograms of fish, every year, to feed millions of people. {#blank#}1{#/blank#}We take minerals (矿物) from the ocean. We can get salt by evaporating (蒸发) seawater. {#blank#}2{#/blank#}such as gold. {#blank#}3{#/blank#}Seaweed (海草) becomes food of many kinds—even candy and ice cream—as well as medicine. Believe it or not, fresh water is another gift from the sea. We can't drink ocean water. {#blank#}4{#/blank#}But ocean water becomes fresh water when the salts are removed. In the future, we will find ourselves depending more and more on fresh water from the sea.

    The sea gives us food, fertilizer, minerals, water and other gifts. What do we give the sea? We pollute the ocean all the time. {#blank#}5{#/blank#}Throwing waste into the ocean is killing off sea life. Yet as the world population grows, we may need the sea and its gifts more than ever.

    We are finally learning that if we destroy our sea, we might also destroy ourselves. Hopefully, it is not too late.

A. Other gifts, such as seaweed, can be also got from the sea.

B. Huge as it is, the ocean can't hold all that we pour into it.

C. Along with salt, other minerals are left after evaporation.

D. We even use their bones (骨头) for fertilizer (肥料).

E. Some of its contents (所含物) may cause illness.

 阅读下面材料,从每题所给的A、B、C、D四个选项中选出最佳选项。

Have you noticed that time seems to pass more slowly when you're waiting in a long line? But when you're playing with your friends, hours seem like minutes. Of course, time is always passing at the same speed--but why does it sometimes feel different?

A study published in the Journal of Neuroscience (神经科学杂志)can tell us the answer. Lead author Masamichi Hayashi and his research team in the US found that it has to do with neurons(神经元)in our brains that are sensitive(敏感的)to time.

The researchers measured (测量)the brain activity of 18 adults who were asked to look at a picture on a screen for a certain period of time. They were then asked to guess how long they had been looking at the picture. They were likely to guess incorrectly when they were asked to stare at the picture for very long or very short periods of time. 

After looking at their brain activity, the researchers found neurons need a certain amount of time to pass signals. When they receive repetitive stimulation(重复的刺激) (such as staring at a screen), these neurons finally get tired and don't work well. It doesn't matter whether this amount of time is long or short, as long as the stimulation is repetitive. However, other neurons still work normally, causing a different experience of time.

When you stand in line or do some other repetitive tasks, such as math homework, your time-sensitive neurons get tired and cause you to feel like time is going slowly. But when you're doing something more high-speed, such as playing soccer, you experience in the opposite way. Either way, you can't always trust your brain when it comes to your experience of time.

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