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题型:阅读理解 题类:常考题 难易度:普通

人教版(新课程标准)高中英语必修4 Unit 2同步练习二

阅读短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。

    When a leafy plant is under attack, it doesn't sit quietly. Back in 1983, two scientists, Jack Schultz and Ian Baldwin, reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short.

    Scientists have found that all kinds of plants give out VOCs when being attacked. It's a plant's way of crying out. But is anyone listening? Apparently. Because we can watch the neighbors react.

    Some plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who was lunching now becomes lunch.

    In study after study, it appears that these chemical conversations help the neighbors. The damage is usually more serious on the first plant, but the neighbors, relatively speaking, stay safer because they heard the alarm and knew what to do.

    Does this mean that plants talk to each other? Scientists don't know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to "overhear" the cry. So information was exchanged, but it wasn't a true, intentional back and forth.

    Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate (亲密的) than the world we can see and hear. Our senses are weak. There's a whole lot going on.

(1)、What does a plant do when it is under attack?
A、It makes noises. B、It gets help from other plants. C、It stands quietly. D、It sends out certain chemicals.
(2)、What does the author mean by "the tables are turned" in Paragraph 3?
A、The attackers get attacked. B、The insects gather under the table. C、The plants get ready to fight back. D、The perfumes attract natural enemies.
(3)、Scientists find from their studies that plants can ________.
A、predict natural disasters B、protect themselves against insects C、talk to one another intentionally D、help their neighbors when necessary
(4)、What can we infer from the last paragraph?
A、The world is changing faster than ever. B、People have stronger senses than before. C、The world is more complex than it seems. D、People in Darwin's time were more imaginative.
举一反三
阅读理解
    “Clothes-swapping” has become an increasing popular activity for women in the United States. The women can give away unwanted clothing at a clothes swap event and get something different in return.
    Recently about 300 women went to a clothes swap at a high school in Springfield, Virginia. It was the largest crowd ever for the area's popular clothing-swap group.
    Daphne Steinberg was having a very good day. “For anyone who knows Ann Taylor LOFT,Ann Taylor is a really nice women's designer and I'll totally wear this to work. So I love that, I love that I can equip myself for work, have a good time in doing it, not totally bankrupt myself. ”
    Kim Pratt organized the clothing-swapping event in Springfield. She also organized a money-raising activity for the high school's debate team. It's one of several ways that her group gives to charitable causes. Another is by donating all of the “un-swapped” clothing to shelters for victims of domestic violence.
    “I started doing this myself four years ago, and we've been doing it for four years, getting bigger and bigger each time we have a swap.”
    She used the social media website meetup. com to help publicize the events. The website has helped her group grow from 30 members to 1,300. Ms Pratt says most of the members respect clothing swap rules. But she says competition for desirable fashion can be strong.
    “We have to tell people sometimes not to hover (徘徊) over the new people coming in with their clothing. As they put it out,some people tend to grab (抢夺) the stuff right out of their hands and it becomes like a free-for-all. We try to avoid that as much as possible.”
根据短文内容,选择最佳答案,并将选定答案的字母标号填在题前括号内。
从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

    Some people would have you believe that being fat is the worst thing you can be. They think that if a person is fat they have no life, no love, no reason to want to look good in their clothes. The sad thing is that many people who are fat do feel the same loathing toward themselves and others who are overweight or obese.

    I know what I'm talking about because I have been there. I have been that fat girl who wore big T-shirts to cover my “sins”. Forget style. Forget fashion sense. I absolutely had none. I didn't even bother getting haircuts for years, just wore my hair long and straight, pulled back in a ponytail, I have to wonder if the reason the fashion industry has ignored plus sized women and children for so long is because plus sized people, feeling they couldn't possibly look great, didn't bother shopping for new clothes, and therefore no profit was to be found by producing those sizes.

    For me, the change that improved my outer look actually started with my outlook on life. I started by being grateful for all I do have, like great health, a stable family, a steady income, freedom, a decent home, the ability to see the trees turn orange in the fall, to hear my grandson humming in the back seat, to remember the great times I've had in my life.

    I started to focus on all the positive aspects of the life I already had. I actually started to feel the beauty of the Universe all around me and to realize that I am part of that perfection. The self loathing stopped. I noticed all the people in my life who loved me in spite of my size. I got off the pity pot and smiled at myself. I acknowledged my shame and embarrassment and moved through that too.

阅读理解

    Are you scared about moving up to senior high school?It can be a new experience,but you shouldn't worry.We've put together a guide on how to survive the first week.

    You're not alone

    Remember everybody else in your year is in the same boat.They may not realize it,but they're just as nervous as you are.Moving to senior high is an opportunity,not a problem.Things are different and all you need to do is be polite and learn the new rules.

    Teachers are ready to help!

    If you're unsure what to do or are worried about anything then you had better ask for help.Teachers are probably the best people to turn to as they're experienced in helping new students.Some senior high schools also have a “friends system”.If your school has this,then you will be paired with an older student.They will look out for you and help you if you have any problems or questions.

    All change

    There are lots of differences between junior high school and senior high school.You'll have a homework diary or a student planner.You will have your lessons with different teachers in different rooms.You will have homework for different subjects on different days,so make sure you get organized.Make sure you have a copy of your school timetable written down so you know which rooms your classes are in and on which days you will have your different subjects.

Other points

    If you've got an older brother or sister at the school then ask them for advice.

    Be yourself! It sounds simple,but people will know you much better if you just act naturally.

    Having early nights makes a difference and you'll find it easier to get up in the morning!

阅读理解

    Little New Year (Chinese: Xiaonian), usually a week before the lunar New Year, falls on Feb 8 this year. It is also known as the Festival of the Kitchen God, the deity(神) who oversees the moral character of each household. Here are six things you should know about the Little New Year, another sign of the start of spring.

    ⒈Offer sacrifices to Kitchen God

    One of the most distinctive traditions of the Little New Year is the burning of a paper image of the Kitchen God, who will report on the family's conduct over the past year. The offerings to the Kitchen God include pig's head, fish, sweet bean paste, melons, fruit, boiled dumplings, barley sugar, and Guandong candy, a sticky treat made out of glutinous millet and sprouted wheat. Most of the offerings are sweets of various varieties. It is thought that this will seal the Kitchen God's mouth and encourage him to only say good things about the family when he ascends to heaven to make his report.

    ⒉House cleaning

    According to Chinese folk beliefs, during the last month of the year ghosts and deities must choose either to return to Heaven or to stay on Earth. It is believed that in order to ensure the ghosts and deities' timely departure people must thoroughly clean both their persons and their houses, down to every last drawer and cupboard.

    ⒊Eat Guandong candy

    Guandong candy, a sticky treat made out of glutinous millet and sprouted wheat, is a traditional snack that Chinese people eat on the Festival of the Kitchen God.

    ⒋Paste paper-cuts to windows

    In the Little New Year, old couplets and paper-cuts from the previous Spring Festival are taken down, and new window decorations, New Year's posters, and auspicious(吉利的) decorations are pasted up.

    ⒌Bath and hair-cut

    As the old Chinese saying goes, whether they're rich or poor, people often have a haircut before the Spring Festival. The activity of taking bath and haircut is often taken on the Little New Year.

    ⒍Preparations for Spring Festival

    People start to stock up necessary provisions for the Spring Festival since the Little New Year. Everything needed to make offerings to the ancestors, entertain guests, and feed the family over the long holiday must be purchased in advance.

阅读理解

    Chinese researchers say they have come up with a simple way to find out a person's biological age —how much the body has aged physically – through a urine (尿) test.

    Their findings will help researchers conduct numbers of ageing studies and even predict a person's risk of age-related diseases, according to a paper published in the journal Frontiers in Ageing Neuroscience.

    Another paper by researchers at the Beijing Hospital and the West China Hospital in Chengdu, Sichuan province, said on Tuesday that people aged at different rates due to changes in their genetic make-up and their environment.

    Chronological age – which is based on one's birth date —was not an exact measure of biological age so a more exact method was needed, the team said.

    Ageing is driven by the lifelong gradual accumulation(积累) of a broad variety of molecular (分子) faults in the body's cells. The team said they had identified a matter 8-oxoGsn that indicated increases in oxidative (氧化性) damage in urine as people's bodies aged.

    Cai Jianping, a co-author at the Beijing Hospital, said: “As we age, we suffer increasing oxidative damage and so the levels of oxidative matters increase in our body.” The team tested the levels of 8-oxoGsn in urine samples from 1,228 Chinese people aged two to 90 and concluded the marker helped accurately determine the stage of biological ageing in adults.

    They had previously found that 8-oxoGsn levels also increased with age in the urine of animals such as mice.

    The team has also developed a rapid analysis technique called ultra-high-performance liquid chromatography(层析法), which can process up to 10 urine samples an hour, according to the study.

阅读理解

    My family and I never talked about school as the ticket to a future. I was in the classrooms, but I wasn't there to learn to write, read or even speak. When it was my turn to read, I wanted to hide. I was 13 years old, but I already hated being who I was.

    I had an English teacher, Mr. Creech, who knew I couldn't read. In one of my first lessons the teacher said that anyone who had a reading age below six had to stand up. I felt so embarrassed. But at the same time, it made me realize that I needed to change the situation. I was determined it wouldn't happen again. Later that day, Mr. Creech encouraged me and promised he would try his best to help me learn to read. From then on, I never gave up practicing reading.

    Now I was 41 years old. One day, I planned to fly back to Texas to visit my friends and family. On my way from the airport, I saw Mr. Creech buying himself a drink. I rushed over and reached into my pocket to pay for him.” Do I know you?” he asked.” Yes, sir, you do know me,” I answered excitedly.” My name is Anthony Hamilton. You taught me English.” The look on his face told me that he remembered the boy he'd once encouraged.

    "I'm so glad I had a chance to see you," I said. "And Mr. Creech, I have great news to share." I told him I had learned to read. But that wasn't all. I had become a published author and an active speaker." The next time you get another Anthony Hamilton in your classroom, please encourage him to read as well." I added.

    The experts say what once worried me has a name: dyslexia(诵读困难症). But I can tell you it was a lack of desire for education.

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