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 sends out certain chemicals.
B. It makes noises.
C. It stands quietly.
D. It gets help from other plants.
2.Scientists find from their studies that plants can .
A. predict natural disasters.
B. help their neighbors when necessary.
C. talk to one another intentionally.
D. protect themselves against insects.
3.What can we infer from the last paragraph?
A. The word is changing faster than ever.
B. The world is more complex than it seems.
C. People have stronger senses than before.
D. People in Darwin’s time were more imaginative.
Choosing to Study Overseas
Every year, thousands of students choose to study in another country for a semester, the summer, or a year. Studying overseas can be an exciting experience for people.
Living in another country can help you to learn a language, and about another culture. You will see the world in a new way, and lean, more about yourself. 2. Many companies today want employees who speak a second language, or have experienced living or working in another country.
Once you decide to study overseas, you have to make some choices. To choose the right country or school, ask yourself: Where do I want to go and why? How much do I want to pay? How long do I want to study overseas? Do I want to live with a host family, with roommates, or alone?
Get your passport and visa (签证) early! Before you go, learn some of the language, and read about some common customs in your host country. Learn about the money. Bring some of it, and a credit card with you.
Once you are there.
After the first few weeks overseas, many students will feel a little homesick. They may miss their family, and familiar ways of doing things. 5. When you feel sad or homesick, try to talk to others, or write about your feelings in a notebook.
A. Get ready to go.
B. Make the right choice.
C. Why do you study overseas?
D. Get quick access to foreign universities.
E. Overseas study may also look good on your future resume (简历).
F. Remember that it takes time to get used to a new place, school, and culture.
G. As a study abroad you will pay tuition fees (学费) to the overseas institution.
While high school does not generally encourage students to explore new aspects of life, college sets the stage for that exploration. I myself went through this ______ process and found something that has changed my ______ at college for the better: I discovered ASL—American Sign Language (美式英语).
I never felt an urge to ______ any sign language before. My entire family is hearing, and so are all my friends. The ______ languages were enough in all my interactions (交往). Little did I know that I would discover my ______ for ASL.
The ______ began during my first week at college. I watched as the ASL Club ______ their translation of a song. Both the hand movements and the very ______ of communicating without speaking ______ me. What I saw was completely unlike anything I had experienced in the ______. This newness just left me ______ more.
After that, feeling the need to ______ further. I decided to drop in on one of ASL club’s meetings. I only learned how to ______ the alphabet that day. Yet instead of being discouraged by my ______ progress, I was excited. I then made it a point to ______ those meetings and learn all I could.
The following term, I ______ an ASL class. The professor was deaf and any talking was ______. I soon realized that the silence was not unpleasant. ______, if there had been any talking, it would have ______ us to learn less. Now, I appreciate the silence and the ______ way of communication it opens.
1.A. searching B. planning C. natural D. formal
2.A. progress B. experience C. major D. opinion
3.A. choose B. read C. learn D. create
4.A. official B. foreign C. body D. spoken
5.A. love B. concern C. goal D. request
6.A. meeting B. trip C. story D. task
7.A. recorded B. performed C. recited D. discussed
8.A. idea B. amount C. dream D. reason
9.A. disturbed B. supported C. embarrassed D. attracted
10.A. end B. past C. course D. distance
11.A. showing B. acting C. saying D. wanting
12.A. exercise B. explore C. express D. explain
13.A. print B. write C. sign D. count
14.A. slow B. steady C. normal D. obvious
15.A. chair B. sponsor C. attend D. organize
16.A. missed B. passed C. gave up D. registered for
17.A. prohibited B. welcomed C. ignored D. repeated
18.A. Lastly B. Thus C. Instead D. However
19.A. required B. caused C. allowed D. expected
20.A. easy B. popular C. quick D. new
In human history, many ancient and splendid civilizations were born and died. China is the only country 1. uninterrupted human civilization. Chinese civilization was born on the shores of the Yellow River. And the rich land 2. Chinese civilization began is Henan Province.
The Yellow River goes across 3. (center) Henan. It is China’s main north-to-south and east-to-west artery (干线). China’s most ancient tribal (部族的，种族的) 4. (lead), the Yellow Emperor and the Yan Emperor,5. (bear) here. Even today, Chinese people all over the world still proudly call 6. (them) the descendants (后裔) of these two emperors.
The river 7. (hold) its unshakable position in the heart of every Chinese, respected by every generation and called “the Mother River”. With intelligence, hard work and determination, Chinese descendants pursue co-existence and common prosperity on this land. The 5,464-km-long Yellow River breaks the last barrier and flows into the broad plain, 8. (form) the cradle (摇篮) of Chinese civilization.
Till now, the Yellow River 9. (raise) 13 dynasties’ capital Luoyang, 8 dynasties’ capital Kaifeng and the biggest economic center in 10. (it) area—Zhengzhou.
I can still remember clearly the day after I had my first exam. I didn’t pass them. I was so scaring that I even don’t want to go to school any more. My parents looked at my test paper and said. “My children, we’re very glad you has finished half of it. You can do better next time. We never expect you to do the best at a very beginning. We hope you can make progress gradual.” What they said made me to feel I could do things well.
From then, I concentrated more on my studies. Now I’m always filling with confidence in my studies because I know my parents are always behind me.
某中学生英文报正举办“The Season I Like Best” 的征文活动，请用英文写一篇短文投稿，内容应包括：
Zhang Hua is clever and works hard at his lessons.________________
A. So is Li Ming B. So does Li Ming
C. It was the same with Jim D. So it is with Li Ming
If we had taken such effective measures much earlier, the river___ soseriously now.
A. is not polluted B. would not be polluted
C. had not been polluted D. would not have been polluted
I behaved badly yesterday and I am ________ of myself now.
A. ashamed B. ashame
C. shame D. ashamed for