When Geoff Marcy was 14, his parents bought him a telescope. Every night, he would go onto the roof outside his window to see the wonders of the sky.
“What excited me most was whether there were planets in other solar systems where life might exist,” he says. “I decided to try to find planets orbiting other stars like our Sun.”
And he did. “My fellow researcher, Paul Butler, and I found our first planet in 1995,” Dr. Marcy says. “We worked for ten years without finding anything! But we stuck with it and our patience paid off.”
Since then, the two scientists have discovered 65 of the more than 100 planets found orbiting other stars. Dr. Marcy and Dr. Butler also spotted the first “family” of three planets. In June 2002 they announced another discovery: a Jupiter-like planet orbiting star 55Cancri.
At first, the two researchers found only planets that orbit close to stars. Recently, the scientists found planets farther out. The planet orbiting 55Cancri is a major breakthrough: it is the first sighting of a large gas planet about same distance from the star as Jupiter is from the Sun.
Why is this important ? Scientists think that life on Earth may exist because of two special features in our solar system. The first is Jupiter.
“Because it’s so big, Jupiter pulls comets and asteroids(小行星), or they all come and hit the Earth.” Dr. Marcy explains. “Without Jupiter , life on Earth would likely have been destroyed.”
A second feature is that Earth is a rocky planet where liquid water, which is necessary for life , can exist. Unlike gas planets, rocky planets like Earth have surfaces where water can gather in pools and seas, which may support life. A huge space exists between the Jupiter-like planet and two other planets that lie close to 55Cancri. Is there an Earth-like planet in the space, too small for us to notice? If so, says Dr. Marcy, “We would have two striking similarities to our solar system: a Jupiter-like planet and an Earth-like planet. And there may be life!”What can we learn about Dr. Marcy from the passage?
| A．He is fond of watching Jupiter. |
| B．He is from a scientist family. |
| C．He dislikes working with Paul Butler. |
| D．He is interested in finding life in outer space. |
Which of the following is true of the recent discovery?
| A．The planet is not as protective as Jupiter. |
| B．The planet is close to star 55Cancri. |
| C．The planet proves to be a gas planet. |
| D．The planet is as large as Jupiter. |
Dr. Marcy and Dr. Butler began to find new planets in ____.
| A．1995 | B．1985 | C．2002 | D．1981 |
Dr. Marcy thinks that life may exist in the 55Cancri system because ____.
| A．he has found the system similar to the solar system. |
| B．he has discovered an Earth-like planet there. |
| C．he has discovered a rocky planet there. |
| D．he has found signs of life in the system |
“But we stuck with it”( in Paragraph 3) means ____.
| A．they felt discouraged | B．they carried on with it |
| C．they failed in their attempt | D．they made some progress |
Some scientists say that animals in the ocean are increasingly threatened by noise pollution caused by human beings. The noise that affect sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.
Decibels（分贝）measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety-five would have the same effect.
Some scientists have proposed setting a noise limit of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales.
A team of American and Canadian scientists discovered that loud noises can seriously injure some animals. The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales’ ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected.
Many researchers whose work depends on ocean sounds object to a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.
Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists suspect that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.According to the passage, which of the following is increasingly dangerous to sea creatures?
| A．The man-made noises. |
| B．The noises made by themselves. |
| C．The sound of earthquakes. |
| D．The sound of the ice-breaking. |
As to the influence of noises on whales, which of the following statements is true?
| A．They are deaf to noises. |
| B．Noises at a certain level may hurt them. |
| C．They are easily confused by noises. |
| D．Noises will limit their ability to reproduce. |
We can know from the passage that many scientists think that the noise limit of one hundred twenty decibels would______.
| A．prevent them from doing their research work |
| B．benefit them a lot in their research work |
| C．do good to their health |
| D．increase the industrial output |
According to the passage, what will scientists most probably do in the future?
| A．They will try their best to decrease noise. |
| B．They will work hard to cut down noise pollution. |
| C．They will study the effect of different noises. |
| D．They will protect animals from harmful noises. |
Many a young person tells me he wants to be a writer. I always encourage such people，but I also explain that there's a big difference between “being a writer” and writing．In most cases these people are dreaming of wealth and fame, not the long hours alone at a typewriter. “You've got to want to write, ”I say to them, “not want to be a writer”．
The reality is that writing is a lonely, private and poor-paying affair. For every writer kissed by fortune there are thousands more whose longing is never rewarded. When I left a 20-year career in the U.S. Coat Guard to become a freelance writer, I had no hope at all．What I did have was a friend who found me a room in a New York apartment building．It didn't even matter that it was cold and had no bathroom．I immediately bought a used typewriter and felt like a real writer．
After a year or so．However, I still hadn't gotten a break and began to doubt myself．It was so hard to sell a story that I hardly made enough to eat．But I knew I wanted to write，l had dreamed about it for years．I wasn't going to be one of those people who die wondering, what if? I would keep putting my dream to the test—even though it meant living with uncertainty and fear of failure．This is the shadow land of hope，and anyone with a dream must learn to live there．The purpose of the passage is to．
| A．warn young people of the hardships that a successful writer has to experience |
| B．advise young people to give up their idea of becoming a professional writer |
| C．show young people it's unrealistic for a writer to seek wealth and fame |
| D．encourage young people to be a writer over a long period of time |
What can be concluded from the passage?
| A．Real writers often find their work interesting and rewarding． |
| B．A writer's success depends on luck rather than on effort． |
| C．Famous writers usually live in poverty． |
| D．The chances for a writer to become successful are little． |
Why did the author begin to doubt himself after the first year of his writing career?
| A．He wasn't able to produce a single book． |
| B．He hadn't seen a change for the better． |
| C．He wasn't able to have a rest for a whole year． |
| D．He found his dream would never come true． |
“…people who die wondering，what if?” refers to “those”．
| A．who think too much of the dark side of life |
| B．who regret giving up their career halfway |
| C．who think a lot without making a decision |
| D．who are full of imagination even upon death |
“shadow land” in the last sentence means．
| A．the wonderland one often dreams about |
| B．the bright future that one is looking forward to |
| C．the state of uncertainty before one's final goal is reached |
| D．a world that exists only in one's imagination |
Teeth are important．Strong，healthy teeth help you chew foods that help you grow．They help you speak clearly．And，they help you look your best．Here are some tips for you to take care of your teeth．
1．Brush your teeth in the right way．
Brush your teeth at least twice a day—after breakfast and lunch or after sweet snacks，too．
Brush all of your teeth，not just the front ones，Spend time brushing teeth along the sides and back of your mouth．Brush away from your gums，too．
Spend at least three minutes each time you brush．Play a song you like to help pass the time．Get a new toothbrush every three months．When you buy your toothbrush，be sure it has soft bristles．
2．Learn how to floss your teeth．
Flossing is a very important way to keep your teeth healthy．Food may hide in places where a toothbrush cannot get to，like the space between two teeth．Flossing can help get rid of it．Carefully move floss between two teeth．Up and down．You’ll need to floss your teeth at least once a day．
3．Have good eating habits．
You need to be careful about what you eat and drink. Eating sugar is a major of tooth decay．Eating sugar before you go to bed can make things even worse，eat lots of fruit and vegetables and drink water instead of soda．The passage is mainly about ．
| A．teeth are important. |
| B．how to brush and floss your teeth |
| C．how to form good eating habits |
| D．how to take care of your teeth |
The underlined word “tips” in this passage means ．
| A．money given to the waiter for personal services |
| B．piece of advice on how to do something |
| C．light blow, tap |
| D．thin end of something |
Which is NOT mentioned in this passage？
| A．Flossing your teeth． | B．Having good eating habits． |
| C．Brushing your teeth． | D．Going to see the dentist． |
Which of the following statements is NOT true according to this article？
| A．We should brush our teeth at least twice a day． |
| B．Flossing can help to get rid of the food hidden between two teeth． |
| C．One of the major causes of tooth decay is eating sugar． |
| D．We don’t have to brush our teeth if we eat a lot of fruit and vegetables． |
When you walk along a street in a big city in the United States， you may see clocks in most stores. Radio announcers give the correct time during the day. People there think that it is important to know the time. Most Americans have watches. They want to do certain things at certain times. They do not want to be late. Not all people all over the world value time. Suppose you visit a certain country in South America. You would find that people living there do not like to rush. If you had an appointment（约会）with someone， he would probably be late. He would not care for arriving on time. In some countries in South America， even the radio programs may not begin right on time， nor do the radio announcers think it important to announce the right time. Many people regard a clock as a machine. It seems to them that a person who does everything on time is controlled（控制）by a machine. They do not want a clock or any machine to have that much power over their lives.There are clocks in most stores in the US cities because ______.
| A．people in the stores want to sell these clocks |
| B．people think it important to know the time |
| C．bosses want to make their stores beautiful |
| D．they needn't wear watches when they are away from home |
The underlined word “rush” in the passage most probably means ______.
| A．“run” | B．“race” | C．“move” | D．“hurry” |
If you had an appointment with someone in some place in South America,he might not arrive on time，and this is because ______.
| A．he didn't have a watch with him |
| B．he didn't think it important to arrive on time |
| C．he forgot to have a look at a watch or a clock |
| D．he didn't like an appointment with someone |
In some countries in South America ______.
| A．the radio programs many start a bit early or late |
| B．the radio announcers do think it important to announce the exact time |
| C．many people think a clock has much power |
| D．most people do not want to be controlled by others |
Ireland has had a very difficult history. The problems started in the 16th century when English rulers fried to conquer (征服) Ireland. For hundreds of years, the Irish people fought against the English. Finally, in 1921, the British government was forced to give independence to the south of Ireland. The result is that today there are two “Irelands”. Northern Ireland, in the north, is part of the United Kingdom. The republic of Ireland, in the south, is an independent country.
In the 1840s ,the main crop, potatoes was affected by disease and about 750, 000 people died of hunger. This, and a shortage (短缺) of work, forced many people to leave Ireland and live in the USA, the UK, Australia and Canada. As a result of these problems, the population fell from 8.2 million in 1841 to 6.6 million in 1851.
For many years, the majority of Irish people earned their living as farmers. Today, many people still work on the land but more and more people are moving to the cities to work in factories and offices. Life in the cities is very different from life in the countryside, where things move at a quieter and slower pace.
The Irish are famous for being warm-hearted and friendly, Oscar Wilde, a famous Irish writer, once said that the Irish were “the greatest talkers since the Greeks”. Since independence, Ireland has revived (复兴) its own culture of music, language, literature and singing. Different areas have different styles of old Irish songs which are sung without instruments. Other kinds of Irish music use many different instruments such as the violin, whistles, etc.What does the author tell us in Paragraph 1?
| A．How the Irish fought against the English. |
| B．How Ireland gained independence. |
| C．How two “Irelands” came into being. |
| D．How English rulers tried to conquer Ireland. |
The last paragraph is mainly about____.
| A．the Irish character | B．Irish culture |
| C．Irish musical instruments | D．a famous Irish writer |
We learn from the text that in Ireland _____.
| A．different kinds of old Irish songs are all sung with instruments |
| B．people are moving to the cities for lack of work in the countryside |
| C．it is harder to make a living as a farmer than as a factory worker |
| D．food shortages in the 1840s led to a decline in population |
What can be the best title for the text?
| A．Life in Ireland |
| B．Ireland, Past and Present |
| C．A Very Difficult History |
| D．The Independence of Ireland |