A single night of taking the drug Ecstasy (摇头丸) can cause serious brain damage and speed up the start of Parkinson’s disease（帕金森综合症）, scientists say. Just two or three Ecstasy tablets can permanently destroy brain cells that affect movement and reasoning, according to American research that links the drug to Parkinson’s for the first time.
A study by a team at Johns Hopkins University in Baltimore, Maryland, involving squirrel monkeys and baboons (狒狒) found that both species suffered permanent damage to key cells, which are lost in Parkinson’s, after receiving three low doses（剂量）of Ecstasy at three-hour periods.
The study is particularly important because baboons are one of the best animal models for the human brain. George Ricaurte, who led the research, said that the widespread abuse of drug might have caused severe damage. “The most troubling result is that young adults using Ecstasy may be increasing their risk of developing Parkinsonism as they get older.”
Alan Leshner, a former director of the US National Institute on Drug Abuse, said, “This study emphasizes the multi-aspect damage that Ecstasy causes to users. We’ve long known that repeated use damages brain cells. But this study shows that even very occasional（偶尔） use can have long-lasting effects on many different brain systems. It sends an important message to young people: don’t experiment with your own brain.”
Janet Betts, a mother whose teenage daughter Leah died after a single Ecstasy tablet in 1995, said, “This comes as no surprise. But people can’t see the effects at first, and they say it won’t happen to them. We’ll see the symptoms later, just as we have with smoking.”The article is intended to ______.
| A．explain the bad effects of drugs on people’s health |
| B．warn young people of the risk of taking the drug Ecstasy |
| C．persuade people out of such bad habits as smoking and using drugs |
| D．tell us the links between the drug Ecstasy and the animal models |
We know from the passage that a low dose of Ecstasy ______.
| A．can permanently destroy one’s brain cells |
| B．can cause serious brain damage occasionally |
| C．will result in immediate symptoms |
| D．may bring on Parkinson’s at once |
Why are squirrel monkeys and baboons involved in the experiments?
| A．Because these animals usually take drugs. |
| B．Because their brain is similar to human beings. |
| C．Because there is a model in the animals’ brains. |
| D．Because they will soon get well after the experiment. |
The underlined word “it” in the last paragraph probably refers to” ”.
| A．Leah’s death after a single tablet |
| B．the symptoms after smoking |
| C．the damage to the brain systems |
| D．repeated use of the drug |
As we all know，it was Thomas Jefferson who wrote the Declaration of Independence (独立宣言)．He wrote it in two weeks，and after a few changes，it was accepted by the Congress．As a result，he became famous in America's history．
Born in Virginia，Thomas Jefferson，a brilliant student at school and almost talented lawyer later，was much interested in politics.
Jefferson was elected Governor of Virginia in 1779，and he was sent to France as the Representative of the American Government in 1784．Sixteen years later，at the age of 57，he was elected president after Washington and Adams．
Far from a handsome man，he was is tall with long arms and big hands．Jefferson，who was an amusing talker in conversation，but a poor speaker，was generally good-natured．
Jefferson was regarded as a defender(捍卫者)of freedom Of America．As a president，he protected the right of speech．Interestingly enough，in his eight years as president，：Jefferson never said “No” to a bill(议案)which the Congress had passed．He did a lot in organizing the new University of Virginia．
Thomas Jefferson died on July the fourth，1826，the fiftieth anniversary of America’s independence．
We are most likely to read this passage in ．
| A．a daily newspaper | B．a popular advertisement |
| C．a hi story book | D．an important notice |
Which of the following statements about Jefferson’s personality is true?
| A．He was a shy and slow learner when he was at school． |
| B．He was not an easy person to get along with at all |
| C．He was not only very talented but also very handsome． |
| D．He was an amusing talker，but not good at speaking in public． |
Jefferson’s greatest contribution in America’history is that ．
| A．he was for the right of free speech |
| B．he was sent to France as the Representative |
| C． he wrote the Declaration of Independence |
| D．he organized the new University of Virginia |
Thomas Jefferson was elected president of the United States in the year of.
| A．1779 | B．1784 | C．1800 | D．1826 |
With only about 1, 000 pandas left in the world, China is desperately trying to clone the animal and save the endangered species(物种). That’s a move similar to what a Texas A & M University researchers have been undertaking for the past five years in a project called “Noah’s Ark”.
Noah’s Ark is aimed at collecting eggs, embryos(胚胎), semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A & M’s College of Veterinary Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.
It is estimated that as many as 2, 000 species of mammals, birds reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.
This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.
The entire procedure could take from three to five years to complete.
“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem,” Kraemer believes. “They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at risk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Project at Texas A& M, the first-ever attempt at cloning a dog.
“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction. I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”
The aim of “Noah’s Ark” project is to _______.
| A．make efforts to clone the endangered pandas |
| B．save endangered animals from dying out |
| C．collect DNA of endangered animals to study |
| D．transfer the nuclear of one animal to another |
According to Professor Kraemer, the major problem in cloning pandas would be the lack of _______.
| A．available panda eggs | B．host animals | C．qualified researchers | D．enough money |
The best title for the passage may be _______.
| A．China’s Success in Pandas Cloning |
| B．The First Cloned Panda in the World |
| C．Exploring the Possibility to Clone Pandas |
| D．China —the Native Place of Pandas Forever |
From the passage we know that _______.
| A．Kraemer and his team have succeeded in cloning a dog |
| B．scientists try to implant a panda’s egg into a rabbit |
| C．Kraemer will work with Chinese scientists in clone researches |
| D．about two thousand of species will probably die out in a century |
Opening week specials（大特惠） at Munchies Food Hall.
At the corner of Green and Brown Streets in the city
Monday 7th of January until Sunday.13rd of January 2008
|
Feast until you’re full! Come down to Monetizes time week to enjoy the special dishes on offer it all of our food outlets. Order from the following:
●Succulent chicken rice ●spicy stays beef
very receipt（收据）. Just fill in your information and place your entry in the box provided.
| A．lamb | B．beef | C．pork | D．chicken |
Everyone who eats at Munchies will receive a ______.
| A．free raffle ticket | B．lucky draw coupon |
| C．free meal | D．balloon and whistle |
I will find out who has won the top to Western Australia when I ______.
| A．watch Channel 3 television |
| B．come down to Munchies at noon |
| C．read The Straits Times on the 5th of January |
| D．attend the lucky draw at Munchies Food Hall |
In the future your automobile（汽车） will run on water instead of gas! You will be able to buy a supercomputer that fits in your pocket! You might even drive a flying car!
For each prediction that has come true today, several others have missed by a mile. Many of these predictions didn’t consider how people would want to use the technology, or if people really needed it in their lives or not. Let’s look at some predictions from the not-too-distant past.
Robot Helpers
Where’s the robot in my kitchen? Nowhere, of course. And he’s probably not coming anytime soon. Robots do exist today, but mostly in factories and other manufacturing environments.
Back in the 1950s, however, people said that by now personal robots would be in most people’s homes.
So why hasn’t it happened? Probably because robots are still too expensive and clumsy. And maybe the idea of robots cooking our dinners and washing our clothes is just too weird. At home we seem to be doing fine without them.
Telephones of Tomorrow
In 1964 an American company introduced the video telephone. They said by the year 2000 most people would have a video phone in their homes. But of course the idea hasn’t caught on yet.
Why? The technol
ogy worked fine, but it over—looked something obvious: people’s desire for privacy（隐私）. Would you want to have a video phone conversation with someone after you just step out of the shower（淋浴）? Probably not---it could be embarrassing! Just because a technology available doesn’t always mean people will want to use it.
And finally, how about that crazy pre
diction of the flying car? It’s not so crazy anymore! But a flying car remains one of the most fascinating technology ideas to capture our imagination. Keep watching the news, or perhaps the sky outside your window, to see what the future will bring.
The whole passage is mainly about ________________.
| A．predictions that have come true. | B．predictions that haven’t come true. |
| C．why predictions don’t come true easily. | D．what technology will bring about. |
The author of this passage won’t believe that _________________.
| A．predictions needn’t consider people’s practical use of technology. |
| B．the future isn’t always easy to guess. |
| C．not all past predictions have come true. |
| D．many of the high—tech things our parents thought we’d be using by now |
simply never appeared.
The underlined word “weird” probably means __________.
| A．wonderful | B．stupid | C．practical | D．strange |
What does the author think of the flying car?
| A．It is too difficult to imagine. | B．It is too crazy an idea. |
| C．It is likely to be made. | D．It is often reported in the news. |
When I was a child, I often dreamed of the time when I could leave home and escape to the city. We lived on a farm, in the winter especially, we wear quite out off from the outside world. As soon as I left school, I packed my bags and moved to the capital.
However, I soon discovered that one big disadvantage is money. It costs so much to go out, not to mention basics like food and housing. Another disadvantage is pollution.
I suffer from asthma(哮喘), and the air is so bad that I am afraid to go outside. Then there is the problem of traveling round. Although I have a car, I seldom use it became of the traffic jams. One choice is to go by bicycle, but that can be quite dangerous.
Of course there are advantages. First, there is so much to do in the city, whatever you tastes in culture or entertainment(娱乐活动). Besides, there are wonderful jobs and greater chances of moving to a more important job or position. Finally, if you like shopping, the variety of goods is very surprising --- and , what is more, shops are often only a short walk away.
Is life better then, in the city? Perhaps it is , when you are in your teens(十几岁)or twenties. However, as you get older, and especially if you have small children, the peace of the countryside may seem preferable. I certainly hope to move back there soon.
What was the writer always thinking about when he was a child ?
| A．Staying on the farm. | B．Moving to the countryside. |
| C．Leaving home for the city. | D．Running away from the school. |
Which of the following is true about the writer?
| A．He is very old now. | B．He is in good health. |
| C．He prefers driving a car. | D．He lives in the city now. |
In the passage, the writer tries to __________.
| A．express his opinions about way of life |
| B．describe his life in the countryside |
| C．an interest in the outside world |
| D．persuade the reader to live in the city |
How is the passage mainly developed?
| A．By inferring. | B．By comparing. | C．By listing examples. | D．By discussing. |