The hard-working ___________ those who work a lot on study.
A. are B. was C. is D. were
Thank you very much for reminding me _______ my English test next week. I have to prepare for it right now.
A. to B. for C. of D. at
Tracy is ___________ understanding girl. We all like her very much.
A. a B. an C. the D. /
Scientists said that in the past 100 years, as the global temperatures went up by 0.74℃, the temperature in North China had climbed 1.4℃ in only 50 years.
China needs to to cut carbon dioxide (二氧化碳) emission (排放), because it's the main reason for global warming. The good news is that China has seen the importance of going green. Can you slow down global warming? Sure! Here are some advice.
Buy fewer clothes that are unnecessary. Wearing your brother's, sister's or dad's old T-shirts means you save the energy.
Change your light bulbs . Use energy-saving light bulbs. And don't forget to turn off the lights when you leave a room and turn off your television and computer when they are not in use!
Take the bus. Taking a bus saves a lot of oil every year.
Say no to plastic bags. The next time you go to the market, use baskets.
Open a window. Don't use the air conditioner (空调), and let some fresh air in . When you have to use the conditioner, set the temperature higher in the summer and lower in the winter to save energy.
Make small changes in your daily life. Don't use one-off cups, bags or boxes. It's time for all of us to do something to save the earth.
The reason for global warming | Too much carbon dioxide in the air |
How to 1. the earth | 1. Wear 2. clothes. 2. Use energy-saving light bulbs and 3. to turn off the lights when you leave a room . 3. Take the bus. 4. Use 4. instead of plastic bags when shopping. 5. Try to use the air conditioner 5. . |
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Computer programmer David Jones earned $ 150,000 a year designing new computer games, yet he cannot find a bank prepared to let him have a check card . Instead, he has been told to wait another two years until he is 18.
He works for a small firm in Liverpool, where most young people of his age are finding jobs. David’s biggest headache is what to do with his money. Though he has high payment, he cannot drive a car, or get credit cards.
David got his job four months ago, a year after leaving school with six O-Levels(普通成绩) and working for a time in a computer shop. “I got the job because the people who run the firm knew I had already written some programs,” he said. “I suppose $150,000 sounds a lot but I hope it will come to more than that this year.” He spends some of his money on records and clothes, and gives his mother $20 a week as he lives with his parents. But most of his spare time is spent working. “Unfortunately, computing was not part of our studies at school,” he said. “ But I had been studying it in books and magazines for four years in my spare time. I knew what I wanted to do and never considered staying on at school. Most people in this business are fairly young, anyway. I would like to earn a million and I suppose early retirement is a possibility. You never know when the market might disappear.
1.why is David so different from other young people of his age?
A.He has got a job.
B. He lives at home with his parents
C.He does not get out much.
D. He earns a high payment
2.David’s greatest problem is that _____.
A. he can’t be treated as an adult (grown-up) by the bank
B. he can’t make as many games as he wishes
C .he doesn’t know what to buy with the money
D. he is too young to drive a car
3.He was employed by the company because _____
A .he had worked in a computer shop
B. he had written some computer programs
C. he is clever and works hard at his lessons
D. he had learnt computer from books and magazines
4.He left school after taking six O-Levels because ____.
A. he was afraid of getting too old to start computing
B. he didn’t enjoy school
C. he wanted to work with computers
D. he wanted to earn a lot of money.
5.Why does David think he might retire early?
A. He thinks computer games might not always sell so well.
B. He wants to stop working when he is a millionaire.
C. One has to be young to write computer programs
D. He thinks his firm might close down.
Fish have ears. Really. They're quite small and have no opening to the outside world carrying sound through the body. For the past seven years, Simon Thorrold, a university professor, has been examining fish ears, small round ear bones called otoliths.
As fish grow, so do their otoliths. Each day, their otoliths gain a ring of calcium carbonate(碳酸钙).By looking through a microscope and counting these rings, Thorrold can determine the exact age of a young fish. As a fish gets older, its otoliths no longer get daily rings. Instead, they get yearly rings, which can also be counted, giving information about the fish's age, just like the growth rings of a tree.
Ring counting is nothing new to fish scientists. But Thorrold has turned to a new direction. They're examining the chemical elements of each otolith ring.
The daily ring gives us the time, but chemistry tells us about the environment in which the fish swam on any given day. These elements tell us about the chemistry of the water that the fish was in. It also says something about water temperature, which determines how much of these elements will gather within each otolith ring.
Thorrold can tell, for example, if a fish spent time in the open ocean before entering the less salty water of coastal areas. He can basically tell where fish are spending their time at any given stage of history.
In the case of the Atlantic croaker, a popular saltwater food fish, Thorrold and his assistant have successfully followed the travelling of young fish from mid-ocean to the coast, a journey of many hundreds of miles.
This is important to managers in the fish industry, who know nearly nothing about the whereabouts of the young fish for most food fish in the ocean. Eager to learn about his technology, fish scientists are now lending Thorrold their ears.
1.What can we learn about fish ears from the text?
A. They are small soft rings.
B. They are openings only on food fish.
C. They are not seen from the outside.
D. They are not used to receive sound.
2.Why does the writer compare the fish to trees?
A. Trees gain a growth ring each day.
B. Trees also have otoliths.
C. Their growth rings are very small.
D. They both have growth rings.
3.The Atlantic croaker is ___________.
A. a fish research B. a fishing company
C. an ocean area D. a fish
4.Why is it important to study the chemistry of otolith rings?
A. The elements of the otoliths can tell the history of the sea.
B. Chemical contents of otoliths can tell how fast fish can swim.
C. We can know more about fish and their living environment.
D. Scientists can know exactly how old a fish is.
5.How would you understand “fish scientists are now lending Thorrold their ears”?
A. They are very interested in Thorrold's research findings.
B. They want to know where they can find fish.
C. They lend their fish for chemical studies.
D. They wonder if Thorrold can find growth rings from their ears.
