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When all those May flowers start to show their heads out to say hello，you may see some familiar faces in your backyard.Many plants live and die within one growing season，so gardeners must replant them each spring.But others have developed to live year after year，so they can blossom again.
   Many flowers are what we call annuals.Their entire life cycle-form seed to death-takes just one year.They might leave behind sleeping seeds，but the roots and leaves all fade away as-soon as the season is done.Then there are perennials，which can survive for years.Scientists believe these types of plants came first.They do no need to be replanted each season，but save some energy in themselves so that they can show again in the following season.
   James Boyer，the vice president for children's education at the New York Botanical Garden，says that annuals probably can survive in areas where there is little water."Annuals are putting all of their chances into the reproduction basket，"Boyer explains."All of the energy to make roots and shoots is just enough to create a big bloom.They will create enough seeds to continue the species.Perennials hide important parts inside protective buds to keep cells fresh until it's time to bloom again.They devote a lot more of their fuel to keeping themselves alive than annuals do.Roots and leaves are repaired and regrow each year.Many eventually produce flowers，but it can sometimes take years.And in most cases，they'll save enough energy to flower again in the following season."
   Whether a plant is a perennial or an annual can depend on where you plant it.Plants sold in cold areas that are named as annuals actually could be perennials in hot areas；in warm weather they can live for years，but a single cold winter will wrack them.
   Boyer says that researchers are trying to study them."If we could change com into a perennial，we wouldn't need to replant it every year，which destroys the soil and its ecosystem，"Boyer says."It could change our agricultural system."

（1）How can perennials survive into the following season？
B
B

A．By producing sleeping seeds.
B．By setting aside some energy.
C．By adapting to climate change.
D．By preserving their roots and leave.
（2）Which of the following may James Boyer agree with？
C
C

A．Their findings are out of expectation.
B．It is easy for perennials to survive with little water.
C．Annuals spend most energy in blossoming and reproducing.
D．Both annuals and perennials prefer warmer growing conditions.
（3）What does the underlined word"wrack"in Paragraph 4 mean？
D
D

A．Protect
B．Keep.
C．Change.
D．Destroy.
（4）How does the text mainly develop？
D
D

A．By giving explanation.
B．By offering examples.
C．By drawing conclusions.
D．By making comparisons.

【考點】說明文；科普知識．

【答案】B；C；D；D

【解答】

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發(fā)布：2024/5/27 14:0:0組卷：1引用：1難度：0.5

相似題

1．Animals are natural resources that people have wasted all through our history.
   Animals have been killed for their fur and feathers，for food，for sport，and simply because they were in the way.Thousands of kinds of animals have disappeared from the earth forever.Hundreds more are on the danger list today.About 170 kinds in the United States alone are considered in danger.
   Why should people care？Because we need animals.And because once they are gone，there will never be any more.
   Animals are more than beautiful or interesting or a source of food.Every animal has its place in the balance of nature.Destroying one kind of animal can create many problems.
   For example，when farmers killed large numbers of hawks（鷹），the farmers' stores of corn and grain were destroyed by mice.Why？Because hawks eat mice．With no hawks to keep down their numbers，the mice multiplied quickly.
   Luckily，some people are working to help save the animals.Some groups raise money to let people know about the problem.And they try to get the governments to pass laws protecting animals in danger.
   Quite a few countries have passed laws.These laws forbid the killing of any animal or plant on the danger list.Slowly，the number of some animals in danger is growing.

（1）What is the best title for the passage？

A．Save the Animals
B．Useful Animals
C．Laws for Animals
D．Animals in Danger
（2）Animals are important to us mainly because

.
A．they give us a source of food
B．they are beautiful and lovely
C．they keep the balance of nature
D．they give us a lot of pleasure
（3）What is the meaning of the underlined word "multiplied" in the passage？

A．Became more.
B．Became less.
C．Turned black.
D．Ate food.
（4）We can infer from the passage that

.
A．people have known the importance of animal protection since a long time ago
B．a(chǎn)nimals play an important role in people's life
C．the number of hawks is on the decrease
D．many countries passed laws forbidding the killing of any animal
發(fā)布：2024/11/15 4:0:1組卷：10引用：2難度：0.5
解析
2．If you are a teenager without a job，you probably do not have much extra money.Sometimes parents will give their children a weekly pocket money for doing small housework，but it is often not enough once the children grow into teenagers and want to do things with their friends all of the time.How to make money is an important thing for teens to learn.If you're wondering how a teenager can make good money，some ideas might be：
   Getting a part-time job at a local restaurant or store is always a sure way to make money as a teen.But getting a job somewhere like this might be hard，considering many jobs in local stores are being taken by adults more and more often.Babysitting is always a good way to make money as a teenager，and finding jobs as a babysitter is often easier than finding a job in a store.
   Doing landscaping（綠化） is something that most adults do not like to do，and teens can usually find jobs around their neighborhood doing the landscaping of friends and family.
   Some teens are good at something such as writing or photography.These teens can make money by doing things such as writing articles for newspapers or magazines or selling their photos online.
   Teens who live in a country area can earn money by helping out on farms，or they can try raising their own animals such as chickens，and selling them or their products.
   Looking for jobs can seem hard at first，but if you have a try，it should not be too hard to find a job or way to make money.

（1）What problem do teenagers have to face when finding a job in local stores？

A．Low pay.
B．Heavy work
C．Long working hours.
D．Competition with grown-ups.
（2）Which of the following is easier for teens who live in a country if they want to earn extra money？

A．Babysitting.
B．Doing landscaping.
C．Selling photos online.
D．Raising animals.
（3）What can we learn from the text？

A．Most grown-ups hate doing landscaping.
B．Getting a part-time job is hard for teens.
C．Pocket money from parents is often enough for teens.
D．Looking after babies is easier than serving customers in a restaurant.
（4）What can be the best title for the text？

A．The Necessary Skills to Make Money
B．How Important Is Money to a Teenager？
C．How Can a Teenager Make Extra Money？
D．Teenagers Should Depend on Themselves
發(fā)布：2024/11/15 8:30:3組卷：0引用：1難度：0.5
解析

3．Why Experiencing a New Culture Is Good for You Often the best way to really explore a new place and culture is by spending abundant time there.A quick vacation may give you a glimpse（警） into your destination. （1）

.These opportunities provide a support network as you adjust to new surroundings.
   Dealing with culture shock
   Culture shock is a response to your new surroundings when abroad that can leave you confused，anxious and feeling lonely.It generally includes frustration at how even the simplest things can be different in the new culture.The thing is though，culture shock can be seen as a problem but also as an opportunity. （2）

.
   （3）

   Perhaps the most obvious lesson learned with travel is the importance of language.Even just learning the basics of the local language can make getting about and making new friends easier.Trying to overcome the language barrier also teaches you about non-verbal communication.Since you can't rely on what is being said，you learn to adapt，to people's tone and body language.This makes you a better communicator.
   Finding inspiration
   （4）

.In each of these creative fields you may come across new approaches or elements that you bring home with you；maybe it's a certain combination of ingredients that you add to your cooking or a new style you adopt for your own home's design.
   Meeting new people
   Meeting people and making friends while overseas is both a necessity and one of the most enjoyable aspects of the experience. （5）

，which enables you to meet people that you never would have known otherwise.You may be exposed to people from different walks of life，find a similar spirit，or both at the same time.

A．Learning language skills
B．Developing body language
C．So you're less likely to further experience a new culture
D．Travelling to new cultures is a great way to expand your social circle
E．Experiencing the local culture can expose you to local art，cuisine，architecture，etc.
F．Only by adjusting to and accepting new surroundings can you understand and appreciate it
G．But experiences like student or work exchange programs allow you to immerse（沉浸） in a new culture

發(fā)布：2024/11/15 5:0:1組卷：5引用：3難度：0.5

解析

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