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题型:阅读理解 题类: 难易度:普通

人教版(2019)必修第一册Welcome Unit 同步练习

阅读理解

Plants may tell us when they're in trouble.Thirsty tomato and tobacco plants make clicking sounds,researchers have found.The sounds are ultrasonic (超声波的),meaning they are too high-pitched for human ears to hear.But when the sounds are transformed to lower pitches,they sound like popping bubbles (爆破的泡泡).Plants also make clicks when their stems (茎) are cut.

"It's not like the plants are screaming," says Lilach Hadany,an evolutionary biologist working at Tel Aviv University in Israel."Plants may not mean to make these noises.We've shown only that plants create informative sounds."

Hadany and her colleagues first heard the clicks when they set microphones next to plants on tables in a lab.The microphones caught some noises.But the researchers needed to make sure that the clicking was coming from the plants.So,the scientists placed plants inside soundproof boxes in the basement,far from the noise of the lab.There,microphones picked up ultrasonic pops from thirsty tomato plants.Though it was outside humans' hearing range,the clicking made by plants was about as loud as a normal conversation.

Cut tomato plants and dry or cut tobacco plants clicked,too.But plants that had enough water or hadn't been cut stayed mostly quiet.Wheat,corn and grapevines also made sounds when stressed out.

The researchers don't yet know why plants click.Bubbles forming and then popping inside plant tissues that transport water might make the noises.But however they happen,pops from crops could help farmers,the researchers suggest.Microphones,for example,could monitor fields or greenhouses to detect when plants need to be irrigated (灌溉).

Hadany wonders whether other plants and insects already tune into plant pops.Other studies have suggested that plants respond to sounds.And animals from pests (害虫),moths to mice can hear in the range of the ultrasonic clicks.Sounds made by plants could be heard from around five meters away.Hadany's team is now studying what the living things near the plants will do after hearing the sounds.

(1)、What is the main idea of the first paragraph?
A、Interpreting plant sounds isn't easy. B、Plants sound off when they're in trouble. C、It's interesting to hear the sounds of plants. D、Plants make sounds in a different way from humans.
(2)、Why did the scientists put plants inside soundproof boxes in the basement?
A、To enjoy the sounds made by the plants. B、To have a better conversation with the plants. C、To find out whether the plants did make sounds. D、To keep the plant sounds within their hearing range.
(3)、In what way can microphones be used to benefit plants?
A、Weed prevention. B、Pest control. C、Temperature monitoring. D、Timely irrigation.
(4)、What still remains unknown to Hadany's team?
A、Whether the sounds of plants can travel far. B、Whether animals can hear the sounds of plants. C、How the neighbors of plants respond to their sounds. D、How plants and animals communicate with each other.
举一反三
阅读理解

    The Allendale Cultural Center has expanded its arts program to include classes for young adults. Director Leah Martin announced Monday that beginning in September, three new classes will be offered to the Allendale community. The course titles will be Yoga(瑜伽) for Teenagers; Hip Hop Dance: Learning the Latest Moves; and Creative Journaling for Teens: Discovering the Writer Within. The latter course will not be held at the Allendale Cultural Center but instead will meet at the Allendale Public Library.

    Staff member Tricia Cousins will teach the yoga and hip hop classes. Ms. Cousins is a skilled choreographer(舞蹈指导) as well as an experienced dance educator. She is a Master of Arts in dance education from Teachers College, Columbia University. The journaling class will be taught by Betsy Milford. Ms. Milford is the head librarian at the Allendale Public Library as well as a columnist(专栏作家) for the professional journal Library Focus.

    The courses are part of the Allendale Cultural Center's Project Teen, which was organized by Leah Martin, Director of the Cultural Center. According to Martin, this project is a direct result of her efforts to make the center a more necessary part of the Allendale community. Over the last several years, the number of people who have visited the cultural center for classes or events has steadily declined. Project Teen is primarily funded by the McGee Arts Foundation, an organization devoted to bringing arts programs to young adults. The other members of Project Teen are two students at Allendale's Brookdale High School and three adults with backgrounds in education and the arts.

    The creative journaling class will be cosponsored by Brookdale High School, and students who complete the class will be given the opportunity to publish one of their journal works in Pulse, Brookdale's student literary magazine. Students who complete the hip hop class will be qualified to participate in the Allendale Review, an annual concert sponsored by the cultural center that features local actors, musicians, and dancers.

    All classes are scheduled to begin immediately after school, and transportation will be available from Brookdale High School to the Allendale Cultural Center and the Allendale Public Library. For more information about Project Teen, contact the cultural center's programming office at 988­0099 or drop by the office after June 1 to pick up a fall course catalog. The office is located on the third floor of the Allendale Town Hall.

阅读理解

    It was close to midnight and it was unusual to see vehicles on the road. However, several trucks pulled over and workers silently unloaded camera equipment and cardboard boxes, and then carried them inside the Morgenson family home.

    What took place over the next eight weeks was inspired by a Hollywood movie called The Joneses about a family of marketers who move into a local neighborhood to sell their products secretly to their neighbors. The idea was to test the power of word-of-mouth marketing. By filming a 'rear' family in unscripted (无剧本的) situations, my team and I would document how the Morgensons' circle of friends responded to brands and products the Morgensons bought into their lives.

    With the help of 35 video cameras and 25 microphones hidden inside the furniture, the operation done secretly showed something shocking. The most powerful hidden persuader of all isn't in your TV or on the shelves of your supermarket. It's a far more important influence that's around you almost every waking moment: your very own friends and neighbors. There is nothing quite so persuasive as observing someone we respect or admire using a brand or product.

    Our analysis also found that the brands the Morgensons used went faster. About one third of the Morgensons' friends began promoting these same brands to their friends. We also found that the brands their friends were most likely to buy at the Morgensons' suggestion were the bigger and better-known ones. This proved my thoughts that traditional marketing and secret marketing work well together. The most persuasive advertising strategies are strengthened by word-of-mouth advertising.

    Whenever I meet with company managers, I tell them that the people who hold the real marketing power are mouse-clicking consumers and their wide circles of real-life friends. In other words, the people who hold the real power are us.

阅读理解

    Time for an adventure?

    Are you a hit bored with your nine - to - five routine? Have a look at our exciting range of holidays and decide what type of adventure you'd like.

    Activity holidays

    Our activity holidays are for everyone, people who love danger or who just like sports. We have a huge variety of water, snow or desert holidays. We'll take you SCBA diving in the Red Sea or kayaking and white water rafting in Canada. If you prefer snow, you can try skiing or snowboarding in the Alps or even igloo — building. For those who like warmer weather, we also have sandboarding (the desert version of skateboarding) or camel safaris.

    Polar expeditions

    Take a cringe to Antarctica or the northern Arctic; explore a Land of white natural beauty and wonderful wildlife. Our experts will explain everything about the two poles as you watch the penguins in Antarctica or whales and polar in the Arctic, There's no greater adventure than travelling to the ends of the earth. A once-in-a-lifetime experience.

   ultural journeys

    Our cultural journeys will help you discover ancient civilizations: India, Thailand, Egypt and many more. Visit temple, palaces and ancient ruins ~just remember to bring your camera! Get to know local ways of life by exploring markets, trying exotic foods and meeting local people.

    Wildlife holidays

    We organize small - group tours to gel closer to nature in Africa, Asia or South America. Go on safari in Africa and watch lions and giraffes. Meet the famous turtles off the Galapagos Islands. Look for tigers in India, or take an elephant safari in Sri Lanka. We use local guides and stay in a range of accommodation, from tents to trees houses.

阅读理解

    Guide to Stockholm University Library

    Our library offers different types of studying places and provides a good studying environment.

    Zones

    The library is divided into different zones. The upper floor is a quiet zone with over a thousand places for silent reading, and places where you can sit and work with your own computer. The reading places consist mostly of tables and chairs. The ground floor is the zone where you can talk. Here you can find sofas and armchairs for group work.

    Computers

    You can use your own computer to connect to the wifi specially prepared for notebook computers; you can also use library computers, which contain the most commonly used applications, such as Microsoft Office. They are situated in the area known as the Experimental Field on the ground floor.

    Group-study Places

    If you want to discuss freely without disturbing others, you can book a study room or sit at a table on the ground floor. Some study rooms are for 2-3 people and others can hold up to 6-8 people. All rooms are marked on the library maps.

    There are 40 group-study rooms that must be booked via the website. To book, you need an active University account and a valid University card. You can use a room three hours per day, nine hours at most per week.

    Storage of study material

    The library has lockers for students to store course literature. When you have obtained at least 40 credits(学分), you may rent a locker and pay 400 SEK for a year's rental period.

    Rules to be followed

    Mobile phone conversations are not permitted anywhere in the library. Keep your phone on silent as if you were in a lecture and exit the library if you need to receive calls.

    Please note that food and fruit are forbidden in the library, but you are allowed to have drinks and sweets with you.

阅读理解

    Every year on April 1, April Fools' Day is celebrated in many countries around the world. In France, it's called "Poisson d' Avril" or "Fish of April." In Scotland, the holiday is often called "Gowkie Day." In Iraq, the holiday is called Kithbet Neesan or "April Lie."

    History experts say people have celebrated April Fools' Day for a long time. Some believe the tradition comes from the ancient Romans more than two thousand years ago. It was a day of playing games and pretending to be someone else.

    Others say the day for fooling began in France in 1564, when King Charles changed the yearly calendar. He moved New Year's Day from April 1 to January 1. Many people did not know about the change because of communication problems back then. Some people continued to celebrate New Year's Day on April 1. Other people called them April Fools and played jokes on them.

    In the United States, April Fools' Day is just a day of joking and playing tricks on friends. These kinds of jokes are also called pranks. These jokes typically end in the prankster shouting "April Fools'!"

    Simple pranks, like telling a friend a funny lie or making prank phone calls, are still common. But, major companies also get in on April Fools' Day fun in a much bigger way. A few years ago, on April 1, Starbucks announced it was introducing new coffee cup sizes -- Plenta and Micra. The very large cups, bigger than a human head, remained useful for customers even after finishing all that coffee. According to Starbucks, the cups could be used as a rain hat, a pot for plants, or a lampshade.

    It did not take long for customers to catch on to the prank! More and more people use social media or smart phone apps to play pranks on their friends on April Fools' Day. One very annoying smart phone app, Cat Facts, sends funny facts about cats to your friends' phones, every day.

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