Do you know why different animals or insects have their special colors? Colors are used mainly to protect them...

题型：阅读选择题类：模拟题难易度：普通

    Do you know why different animals or insects have their special colors? Colors are used mainly to protect themselves.
    Why can't some birds easily catch locusts（蝗虫）? It is because locusts change their colors together with the change of the colors of crops. When crops are green, locusts look green. But as autumn comes, locusts change to the same brown color as crops have. Some other insects with different colors from plants are easily found and eaten by others. So they have to hide themselves for lives in the day and appear only at night.
    If you study the animal life, you'll find the main use of coloring is to protect themselves. Bears, lions and other animals can't be easily seen by hunters. This is because they have the colors much like the trees.
    Have you ever noticed an even more strange thing? A kind of fish in the sea can send out black liquid when it faces danger. While the liquid spreads over, its enemies can't find it. And it quickly swims away. So it has lived up to now though it is not strong at all.

（1）、From the article we learn that locusts 　　　　　　　　　.

A、are dangerous to their enemies B、are easily found by birds C、change their colors to protect themselves D、are small animals

（2）、How can insects with different colors from plants keep out of danger?

A、They have to move quietly. B、They hide themselves in the day and appear at night. C、They have the colors much like their enemies. D、They run away quickly.

（3）、Bears and lions can keep safe because 　　　　　　　　　.

A、they live in forests B、they like brown and grey colors C、they move quietly D、they have the colors similar to the trees

（4）、What does the word “liquid”mean in the last paragraph?

A、气体。 B、固体。 C、液体。 D、水蒸气。

（5）、Which is the best title for this passage?

A、The Main Use of Colors for Animals and Insects B、Colors of Different Animals and Insects C、The Change of Colors for Animals and Insects D、The Change of Different Animals and Plants

举一反三

    As you are soon on your way to Eastern Europe, here are a few tips on what you should pack. In general, pack lightly, with only the most basic clothes. People dress casually(随便地) in Eastern Europe, so you don't need to bring along your smartest clothing.
    Batteries: If your camera, flash, or other appliances run on batteries, bring enough supply along. Certain types of batteries don't exist in Eastern Europe, and those that do often don't last very long.
    Cash: We have found it good to have supply of small-unit U.S. bills($1and $5) to use in hard–currency stores, to buy international train tickets, etc. The hard–currency stores never seem to have the right change.
    Electric Current Adapter(转换器): If you bring any appliances, remember that the electricity in Eastern Europe uses 220 volts A.C., not the standard 110 volts of North America. A 110 volts appliance will soon burn out when attached to an unchanged 220-volt plug.
    Language Tools: One of Europe's biggest challenges is communicating with the local people since their languages are so different from our own. To help overcome difficulties, you might buy phrasebooks before you go — you won't find them once you are in Eastern Europe.
Money Belt: A money belt is especially helpful when you have many documents to carry around ( as you always do in Eastern Europe). The best one we find is made by Eagle Greek Travel Gear, 143 Cedros Ave. (P. O. box 651), Solona Beach, CA 92075 (tel. 619/755 – 9399, or toll free 800/874 – 9925) outside California.
    Traveler's Checks: These are necessary. Bring your traveler's checks in small to medium unit ($10, $20, or $50) to change a little bit at a time, so as not to be left with a lot of local money. To be on the safe side, be sure to copy down the check numbers in two places, just in case something happens to the checks.

阅读理解

Venus is close to the earth．It is the second planet from the sun．The earth is the third planet from the sun．Venus is similar(相似的)to the earth in size and mass (质量)．It is often described as the earth's"sister"．

Scientists have been learning about Venus for a long time．First they looked at Venus through telescopes(望远镜)．But Venus is covered with thick clouds．Scientists could not see Venus well through the clouds．So they made guesses about it．

For a long time，scientists thought that Venus had water and plants．They thought Venus might have animals too．But they didn't know for sure．

Then scientists found a way to learn more about Venus．In'the 1960s，they began sending probes(航天探测器)to Venus．The probes flew through the thick clouds．They took pictures of Venus up close．They found out many things too．The probes sent the pictures and things they found out back to the scientists．

The scientists learned a lot from the probes．First they learned that most of their guesses were not right．And they learned that Venus is very hot．

After that，scientists knew they could not send people to Venus．But they still wanted to know more about it．So they sent new probes．These new probes took great pictures of the planet．The pictures showed that Venus has plains (平原)and mountains!And in some ways，Venus looks like the earth．

根据材料内容完成下列任务。

任务一：简要回答下列问题。

阅读理解

▲How nosebleeds happen：

Nosebleeds are very common among children and often result from activities such as blowing the nose too hard or getting hit on the nose during play.Catching colds or the flu can also cause (引起) nosebleeds.Usually，bleeding isn't very serious and it will stop in less than ten minutes.

▲When nosebleeds happen：

Your child may be frightened that there is something seriously wrong.Crying may make the bleeding worse, so it is important for you to tell him that he will be fine.

▲How to give first aid：

Let your child sit upright(直立) and tell him to put his head down.

Help your child press the sides of the nose for ten minutes.Do not stop to see if the bleeding has stopped.

▲If first aid works：

Rest your child for the next 12—24 hours.Tell him to do quiet activities such as drawing，reading a book or watching TV.

Tell him not to take a hot shower for at least 24 hours after a nosebleed.

Tell him not to touch or blow his nose for 24 hours.

▲If first aid doesn't work：

You'd better take him to hospital.

阅读理解

Do equations and historical( 历史的) facts give you a headache? A change in the school timetable(课程表) may be the cure.

This suggestion is based on a recent study carried out by scientists from Royal Holloway, University of London, the UK. They found that teenagers could get higher marks in math if they studied in the mornings and better grades in history if they were taught in the afternoons.

The researchers studied students' grade reports, class timetables and absence rates( 缺席率) at a middle school in Bulgaria over nine years. The results showed that when teenagers had math classes earlier in the day, they scored about 7 percent higher in tests than when taught in the afternoon. Lower-ability students feel stressed most when they were studying math in the afternoon. In history, students taught in the afternoon scored about 6 percent higher than when they were taught in the morning. However, there was no sign that similar patterns( 模式 ) work for other subjects such as languages or geography.

Velichka Dimitrova, who did the study, said the findings show that we perform( 表现 ) better at different times of the day. “In the morning, our brains are better and fresher, so we are better at doing something like problem solving, where we require more speed and attention” Dimitrova told The Telegraph. “In the afternoon, it seems that this process slows down. On the other hand, history is more suitable for the afternoon, when we are more creative and open to discussion,” she said. Subjects such as foreign languages require both memory and creativity. This is perhaps why the time of day had no influence on language learning.

Time-of-day influences such as these are believed to have something to do with the body clock.

This is the system in our bodies that controls when we need to sleep. Some schools in the US and UK have tried later school starting times for teenagers, whose body clocks change as they grow into adults. Dimitrova believes schools should jump at this chance to improve their students' performance just by changing their timetables.

阅读下列短文，从下面每小题的A、B、C、D四个选项中选择最佳选项。

On July 1, 2019, Shanghai began the waste sorting programme. There are four kinds of waste: wet waste, dry waste, dangerous waste and recyclable waste. Under the new rules, people must put their waste in the right place. Or they will be fined more than 50 yuan and less than 200 yuan.

Sorting waste is very important. By doing so, we can take out non-degradable(不可降解的)waste and save resources(资源)In return, we can get a better environment. ▲ Luckily. Internet companies like Wechat, Baidu and Alipay made apps to help.

How do we use the apps? Just open one waste-sorting app and write down the keyword. Then the app will tell us the answer and why, Alipay says its waste-sorting app got one million users in just three days and the number is still growing. They are working on the app and people may use it by taking photos in the future.

The waste-sorting programme is the talk of the whole country now. And another 21. 3 billion yuan will be used on the programme in 46 cities by the end of 2020.

阅读短文，根据首字母提示完成单词。

September 10th is Teachers' Day in China. It is a special and great f{#blank#}1{#/blank#}. A lot of students celebrate this day with their t{#blank#}2{#/blank#}. Teachers work very hard all the time in a year. O{#blank#}3{#/blank#}this day they can have fun. Which teacher is your f{#blank#}4{#/blank#}one? What present can you get r{#blank#}5{#/blank#}for your dear teachers? Floweror any little p{#blank#}6{#/blank#}? Your teachers are h{#blank#}7{#/blank#}to get your beautiful presents. Let's say "Happy Teachers' Day to our dear teachers t{#blank#}8{#/blank#}.

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