In the rush to get to school, you drop a piece of toast on the floor. Do you throw it away or decide it’s still OK to eat? If you’re like most people, you eat it. Maybe you follow the “5-second rule”, which claims foods are safe to eat if you pick them up within 5 seconds after dropping them.
But you might want to think again. Scientists now say that 5 seconds is all it takes for foods to become polluted with enough bacteria to make you sick.
Bacteria can cause many kinds of illnesses. Some kinds of bacteria can grow on food. If you eat foods on which these bacteria are growing, you can become sick.
One of these food-borne bacteria is Salmonella. It makes 1.4 million people sick every year. Salmonella is often found in raw eggs and chicken. Cooking kills these bacteria, which is why it is so important to cook eggs, chicken, and other foods thoroughly.
But how long does it take these bacteria to pollute food? A team of scientists in South Carolina did an experiment. First, they placed an amount of Salmonella on three surfaces; wood, tile (瓦片), and carpet. They placed a piece of bread and a piece of bologna（一种大红肠）on each surface for 5, 30, or 60 seconds. After just 5 seconds, both the bread and the bologna picked up enough bacteria to make you sick.
So, forget the 5-second rule. If your toast drops on the floor, throw it away and get another piece of clean toast. And this time, be careful not to drop it!In which part of a newspaper can you most probably find this passage?
| A．Culture. | B．Health. |
| C．Advertisement. | D．Technology. |
After dropping a piece of toast, a person who follows the “5-second rule” will______.
| A．throw away dirty toast immediately and go away |
| B．pick up the toast as quickly as possible and eat it |
| C．eat the toast within 5 seconds and feel pleased |
| D．get another piece of clean toast quickly and eat it |
The scientists in South Carolina did the experiment to ______.
| A．see how quickly bacteria can pollute food |
| B．show that the 5-second rule is correct |
| C．see how harmful bacteria are to people’s health |
| D．show that bacteria grow at different speeds on different foods |
Trees are useful to man in three very important ways: they provide him with wood and other products；they give him shade；and they help to prevent drought and floods.
Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important. In his eagerness to draw quick profit from the trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had.
Two thousand years ago, a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the country found itself faced by floods and starvation.
Even though a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food with, and he can earn money by making charcoal(木炭) or selling wood to the townsman（城市居民）. He is usually too lazy or too careless to plant and look after trees. So unless the government has a good system of control, or can educate the people, the forests will slowly disappear.
This does not only mean that the villager’s sons and grandsons have fewer trees. The results are even more serious. For where there are trees their roots break the soil up—allowing the rain to sink in and also hold the soil, thus preventing it being washed away easily, but where there are no trees, the soil becomes hard and poor. The rain falls on hard ground and flows away on the surface, causing floods and carrying away with it the rich topsoil, in which crops grow so well. When all the topsoil is gone, nothing remains but a worthless desert.The purpose that the writer wrote this article is to _________.
| A．tell people the use of wood |
| B．tell people the function of tree roots |
| C．warn that man mustn’t destroy forests any more |
| D．explain how trees help man live a better life. |
In the writer’s opinion, _________, or the forests will slowly disappear.
| A．measures must be taken |
| B．people shouldn’t draw benefit from the tree |
| C．government must realize the serious results |
| D．unless no trees are cut down. |
According to the article we know it is ________ to prevent the forests from slowly disappearing.
| A．necessary but impossible | B．necessary but difficult |
| C．impossible and unimportant | D．difficult and impossible |
In the last two paragraphs the writer wanted to make it clear that _________.
| A．where there are no trees, the soil becomes poor but soft |
| B．where there are many trees, there are more floods |
| C．where there are no trees, the land might become desert slowly |
| D．floods will make the land become desert |
If a person forgets names , places or facts —and has trouble with everyday things like reading or shopping —it may not mean you are getting old . It could be Alzheimer’s disease . So it’s important to see a doctor as soon as you can .
There is no cure for Alzheimer’s . But a drug called ARICEPT has been used by millions of people to help their symptoms (症状).
In studies , ARICEPT has been proved to work for Alzheimer’s . It has helped people improve their memory over time . It has also helped them to keep doing everyday things on their own .
Ask your doctor if ARICEPT is right for you or your loved one . It is the Number One drug for Alzheimer’s in the world . The sooner you know it’s Alzheimer’s , the better ARICEPT can help .
ARICEPT is good for many but may not be good for everyone . Some people may experience not sleeping well , feeling very tired , or not wanting to eat . In studies , these side effects weren’t serious at all and went away over time . Some people taking ARICEPT may feel light-headed . In this case you should tell your doctors because your condition may get worse .If one suffers from Alzheimer’s , .
| A．he can’t do everyday things on his own |
| B．he has trouble with his memory |
| C．he often forgets things because he is old |
| D．he can’t move about |
What is ARICEPT ?
| A．A medicine to cure Alzheimer’s |
| B．A medicine to delay signs of aging . |
| C．A medicine to cure brain damage . |
| D．A medicine to reduce the symptoms of Alzheimer’s . |
One who is taking ARICEPT should go to see a doctor if he .
| A．feels like a drunken man | B．feels tired out |
| C．has no desire to eat | D．can’t fall asleep |
In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet（彗星）. When the fragment（碎片）landed in the southern part of the giant planet, the explosions were watched by scientists here on earth. But what if our own planet was hit by a comet?
The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two fragments will probably hit the southern part of the Earth. The news has caused panic.
On 17 July, a fragment four kilometers wide enters the Earth’s atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The wave moves into the Indian Ocean and heads towards Asia.
Millions of people are already dead in the southern part of the Earth, but the north won’t escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilization has collapsed. No more than 10 million people have survived.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs（恐龙）were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a space fragment. The dinosaurs couldn’t survive in the cold climate that followed and they became extinct. Will we meet the same end? Which of the following is NOT TRUE according to the author’s description of the disaster in 2094?
The whole mankind becomes extinct.
All the coastal cities in African are destroyed.
The whole world becomes extremely cold.
The visit of the comet results in wars.Why does the author mention dinosaurs at the end of the passage?
| A．Because they could only live in the warm climate. |
| B．Because they once dominated the Earth. |
| C．Because dinosaurs and humans never live in the same age. |
| D．Because their extinction indicates future disasters |
In writing the passage, the author intends to __________.
| A．give an accurate description of the possible disaster in the future |
| B．warn of a possible disaster in the future |
| C．tell the historical development of the Earth |
| D．prove that humans will sooner or later be destroyed |
It can be concluded that the passage is most probably part of a(n) __________.
| A．horror story | B．news report |
| C．article of popular science | D．research paper |
When I was six, Dad brought home a dog one day, who was called “Brownie”. My brothers and I all loved Brownie and did different things with her. One of us would walk her, another would feed her, then there were baths, playing catch and many other games. Brownie, in return, loved each and every one of us. One thing that most touched my heart was that she would go to whoever was sick and just be with them . We always felt better when she was around.
One day, as I was getting her food, she chewed up(咬破)one of Dad’s shoes, which had to be thrown away in the end. I knew Dad would be mad and I had to let her know what she did was wrong. When I looked at her and said, ”Bad girl,” she looked down at the ground and then went and hid. I saw a tear in her eyes.
Brownie turned out to be more than just our family pet, she went everywhere with us .People would stop and ask if they could pet her. Of course she’d let anyone pet her. She was just the most lovable dog. There were many times when we’d be out walking and a small child would come over and pull on her hair. She never barked(吠) or tried to get away. Funny thing is she would smile. This frightened people because they thought she was showing her teeth. Far from the truth, she loved everyone.
Now many years have passed since Brownie died of old age. I still miss the days when she was with us. What would Brownie do when someone was ill in the family?
| A．Look at them sadly. | B．Touch them gently. |
| C．Play games with them. | D．Keep them company. |
We can infer from Paragraph 2 that Brownie__________.
| A．would eat anything when hungry | B．loved playing hide-and-seek |
| C．felt sorry for her mistake | D．disliked the author’s dad |
Why does the author say that Brownie was more than just a family pet?
| A．She was loved by everybody she met. | B．She played games with anyone she liked. |
| C． She was treated as a member of the family. | D．She went everywhere with the family. |
Which of the following best describes Brownie?
| A．Shy | B．Polite | C．Caring | D．Brave |
What could make Michael Jordon, one of the greatest basketball players in history, shed tears? It was when he became a member of the Basketball Hall of Fame on September 11. The hall is in Springfield, Massachusetts and honors the best basketball players, greatest coaches and other contributors to the game. “The game of basketball has been everything to me ,” said Jordan, 46. “It is the place I have always gone when I needed to find comfort and peace.”
Jordan retired twice in his 15-year career, finishing with 32292 points, the third highest total points in NBA history behind Kareem Abdul-Jabbar and Karl Malone. His average of 30.12 points a game is the best in the League.
“One day you might look up and see me playing the game at 50,” Jordan said. “Because limits, like fears, are often just an illusion.” (假象) In other words, it was motivation that made Jordan such a success..
A great career did not mean a smooth one. His high school coach cut him from the team in favor of a taller player when Jordan was in 10th grade. His college coach wouldn’t allow him on the cover of Sports Illustration in 1981 with North Carolina’s four other players because Jordan was a freshman. In his first NBA All-Star game, older NBA stars wouldn’t throw him the ball because of jealousy.
“That burned me up,” Jordan said. “But obstacle don’t have to stop you. If you run into a wall, don’t turn around and give up. Figure out how to climb it, go through it, or work around it.” When Jordan became a member of the Basketball Hall of Fame,_____
| A．he found something more encouraging . |
| B．he was so excited that he couldn’t hold his tears back. |
| C．he was happy and sad at the same time. |
| D．he felt very comfortable and peaceful. |
Who scored the highest total points in NBA history?
| A．Michael Jordon. | B．Karl Malone. |
| C．Kareem Abdul-Jabbar. | D．Kobe Bryant. |
When in college basketball team, Jordan ______
| A．was not experienced enough to be favored by his coach. |
| B．was the pet of his basketball coach. |
| C．was the best player in the team |
| D．was the tallest one of all basketball players. |
What does the word “obstacle” mean in the passage?
| A．Something that makes you feel uncomfortable |
| B．The coach who thinks you are not suitable for playing basketball. |
| C．A wall in the basketball court to stop players in training. |
| D．Something that makes it difficult for you to achieve your goal. |
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