Trees should only be pruned (修剪) when there is a good and clear reason for doing so and , the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.
First, pruning may be done to make sure that trees have desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches, which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut out diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the center and so preventing the free movement of air.
One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease , but it is a wound that will heal (愈合). Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce that risk of death as far as possible. It is important to make the area, which has been pruned, smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hours and then paint it with one of the materials available from garden shops produced especially for this purpose. Pruning is usually done in winter , for then you can see the shape of the tree clearly without interference (妨碍) from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly .．Why should pruning be done?
| A．To make the tree grow taller. | B．To improve the shape of the tree. |
| C．to get rid of the small ranches . | D．To make the small branches thicker. |
．Trees become unhealthy if the gardener__________.
| A．giving a tree a special shape and a definite height |
| B．removing small side branches and making a tree look less thick |
| C．allowing too many branches to grow in the middle |
| D．having a tree surrounded by many other trees |
．Why is a special material painted on the tree?
| A．To help a wound to dry. | B．to cover a rough surface. |
| C．To make a wound smooth. | D．To prevent disease entering a wound. |
．A good gardener prunes a tree _________ .
| A．several times throughout the year | B．as quickly as possible |
| C．occasionally when necessary | D．regularly every winter |
．What was the author’s purpose when writing this passage?
| A．To discuss different methods of pruning. |
| B．To introduce some common knowledge of pruning. |
| C．To explain how trees develop disease. |
| D．To give practical instruction for pruning a tree. |
Car sharing is another way to drive green that’s gaining in popularity, especially in urban areas．People who may not drive every day but still want a car to run errands （差事）or drive on weekends benefit most from car sharing．Car sharing is usually run by a service like Zipcar, though there are non-profit （非营利的）and informal car sharing services．Members pay a monthly fee and have access to an entire fleet of cars when they need one．The cars are parked in fixed spots around the city, so members only need to make a reservation, and then go to the pickup spot．
Car sharing has major environmental benefits because it reduces the number of cars on the road．Members don’t drive just because they are in a car．They plan trips, and if they don’t need a car, they don’t use one．Still, a car is available to them if they need to make a big trip to the grocery store, pick someone up at the airport or if they want to go to the beach for the day．Members also benefit by having access to a car without any of the headaches of ownership．They usually don’t have to pay for the gas, insurance or maintenance （保养）, and the monthly membership fee is less than a typical car payment．So if you really want to go green but aren’t ready to totally give up a car yet, car sharing may be the way to go．
If you still need to get around, but want to go even greener than sharing a car, share a bus!The author intends to tell us that car sharing ________．
| A．has become the most popular way to go to work |
| B．has become the best way to cut living costs |
| C．is becoming more and more popular in cities |
| D．is becoming popular both in urban and rural （乡村的）areas |
We can conclude from the passage that _________．
| A．Zipear can’t help you if you are running urgent errands |
| B．Zipcar, different from other services, aims green driving with no profit |
| C．Zipcar is a company supplying car sharing service for a monthly payment |
| D．Zipcar is a company providing formal car sharing free |
The second paragraph mainly tells us _________．
| A．why people will share a car |
| B．why car sharing benefits the environment |
| C．why car sharing is cheaper than owning a car |
| D．why a car is available to members |
Which of the following is NOT mentioned in the passage?
| A．Car sharing has become a new trend （趋势）． |
| B．Car sharing can save you the headaches of ownership． |
| C．Bus sharing is even greener than car sharing． |
| D．Zipcar is the largest company offering car sharing services． |
A man was on the side of the road hitchhiking（搭便车）on a very dark night in the middle of a terrible rainstorm, with no cars on the road．The storm was so strong that the man could hardly see a few feet ahead of him．Suddenly, he saw a car come towards him and stop．The man, without thinking about it, got in the car and closed the door and only then did he realize that there was nobody behind the steering wheel（方向盘）!
The car started to move very slowly．The man looked at the road and saw a curve （拐弯处）coming his way．Terrified, he started to pray, begging for his life．He had not come out of shock when, just before the car hit the curve, a hand suddenly appeared through the window and moved the wheel．The man, paralyzed with fear, watched how the hand appeared every time the car was drawing near a curve．Finally, although terrified, the man managed to open the door and jump out of the spooky car．Without looking back, the man ran through the storm all the way to the nearest town．In a state of complete horror, the man walked into a nearby bar and asked for two glasses of Scotch whisky．
Then, still shaking with fright, he started telling everybody in the bar about the horrible experience he just went through in the spooky car．Everyone in the bar listened in silence and became frightened, with hair standing on end, when they realized the man was telling the truth because he was crying and he was certainly not drunk!
About half an hour later, two other young men walked into the same bar and one said to the other, “Hey, there’s a stupid man who jumped into the car while we were pushing it!”When the car was first drawing near a curve, the man ________．
| A．felt very curious | B．was extremely frightened |
| C．cried for help | D．remained as calm as possible |
According to the passage, what made the man’s experience believable?
| A．His reasonable behavior． | B．His vivid description． |
| C．His plain appearance． | D．His honest attitude． |
We can infer from the passage that ________．
| A．it is unsafe for people to take a free ride |
| B．the man was telling a lie to his listeners |
| C．the car probably broke down on the way |
| D．the two young men were familiar with the man |
Read the passage carefully．Then answer the questions or complete the statements in the fewest possible words.
Most people look forward to retirement as a time when they can finally take up activities that they never had the time or energy to pursue before．But some recent studies on people in their golden years are disturbing: they suggest that retirees are more likely to suffer from depression and possibly higher rates of other diseases such as heart disease and high blood pressure．That’s why a new study of French workers is welcome news.
Led by Hugo Westland, a professor of psychology at Stockholm University, the study of more than 14,000 workers found lower rates of depression and fatigue (疲劳) in people after they got tired while they were still employed.
The scientists followed the employees of the French national gas and electric company for 14 years．They found in the year immediately after retirement, the volunteers reported 40% fewer depressive symptoms than they had in the year before their retirement．The researchers also found an 81% drop in reports of both mental and physical fatigue over the same time period.
Clearly, said Westerlund, much of these decrease in physical and mental fatigue can be traced back to relief from the stresses of work．The decline in depressive symptoms suggests that retirement may be having a positive mental effect, too, which may have a lot to do with the generous pensions (养老金) that French workers enjoy．Most retirees in that country still benefit from about 80% of their yearly salaries.
“The economic or financial situation in retirement is very important,” Westerlund says．“We don’t know if the decrease in fatigue and depressive symptoms is because of the removal of something bad while in work or the addition of something good while in retirement．But no matter the reason, if life in retirement is not comfortable, then we won’t see the improvements we did.”
However, in European nations like France, governments are considering changes to pension plans, which may affect retirees’ health after they leave their jobs－with less of a financial safety net, workers may no longer seem so mentally and physically happy to be out of work．
(Note: Answer the questions or complete the statements in NO MORE THAN EIGHT WORDS.)According to some recent studies, retired people may have depression and higher rates of other diseases like __________.
Westerlund’s group found that in the year just after the retirement most retired French workers felt much less tired both __________.
What does the word “improvements” in paragraph 5 refer to?
Retirement may make people happier with __________.
Directions: Read the following text and choose the most suitable heading from A-F for each paragraph．There is one extra heading which you do not need.
| A．Causes of overusing fluoride |
B．Negative effects of fluoride |
| C．Safe use of fluoride |
D．The expert’s background information |
| E．No need to worry about fluoride poisoning |
|
| F．Solutions to improper use of fluoride |
I have heard that fluoride can help stop dental decay, but I recently read that it is poisonous．Which of these is true? How can children use fluoride safely?
This question is answered by Dr Marcia M．Rich who practises general dentistry in Newholt．She is also a lecturer at the University and a writer for the monthly magazine Your Dentist Cares．
My answer to the first question is to stress that fluoride works well and is safe when users follow instructions．Young children have a tendency t
o swallow toothpaste, which is why they should only have a tiny amount of fluoride toothpaste on their toothbrush．If this simple measure is taken, parents can be confident that children will be protected against tooth decay, and come to no harm.
Almost all medicines have an adverse effect－or even be deadly－if they are not taken as directed．So you are right－fluoride can be poisonous if it is swallowed in very large quantities．It is for the reason that fluoride supplements can only be obtained on prescription from the doctor or dentist．Please be assured that fluoride overdoses are rare－in fact, I have never heard of any fatal incidents related to fluoride poisoning.
Scientific studies have shown that fluoride can help to prevent cavities as long as it is used correctly．If fluoride is abused, there is a risk of illness or even deaths in extreme cases．If a deadly amount of fluoride is taken, immediate first-aid could save a life．A person who has swallowed a large amount of fluoride will probably start vomiting．If not, the patient should be given milk or antacid and taken to the nearest hospital for emergency treatment.
Taking too much fluoride while teeth are growing can lead to a condition called dental fluorosis．The most likely cause is the swallowing of fluoride toothpastes by young children．It can also be caused by inappropriate use of fluoride drop or other fluoride supplements, for example when fluoride is already is already present in drinking water．
Twenty-first century humanity has mapped oceans and mountains, visited the moon, and surveyed the planets．But for all the progress, people still don’t know one another very well.
That brings about Theodore Zeldin’s “feast of conversation”－events where individuals pair with persons they don’t know for three hours of guided talk designed to get the past “Where are you from?”
Mr．Zeldin, an Oxford University professor, heads Oxford Muse, a 10-year-old foundation based on the idea that what people need is not more information, but more inspiration and encouragement.
The “feast” in London looks not at politics or events, but at how people have felt about work, relations among the sexes, hopes and fears, enemies and authority, the shape of their lives．The “menu of conversation” includes topics like “How have your priorities changed over the years?” Or, “What have you rebelled against the past?”
As participants gathered, Zeldin opened with a speech: that despite instant communications in a globalized age, issues of human heart remain．Many people are lonely, or in routines that discourage knowing the depth of one another．“We are trapped in shallow conversations and the whole point now is to think, which is sometimes painful,” he says．“But thinking interaction is what separates us from other species, except maybe dogs…who do have generations of human interactions.”
The main rules of the “feast”: Don’t pair with someone you know or ask questions you would not answer．The only awkward moment came when the multi-racial crowd of young adults to seniors, in sun hats, ties and dresses, looked to see whom with for hours．But 15 minutes later, everyone was seated and talking, continuing full force until organizers interrupted them 180 minutes later.
“It’s encouraging to see the world is not just a place of oppression and distance from each other,” Zeldin summed up．“What we did is not ordinary, but it can’t be madder than the world already is.”
Some said they felt “liberated” to talk on sensitive topics．Thirty-something Peter, from East London, said that “it might take weeks or months to get to the level of interaction we suddenly opened up.”What can the “conversations” be best described as?
| A．Deep and one-on-one. | B．Sensitive and mad. |
| C．Instant and inspiring. | D．Ordinary and encouraging. |
In a “feast of conversations”, participants ______.
| A．pair freely with anyone they like |
| B．have a guided talk for a set of period of time |
| C．ask questions they themselves would not answer |
| D．wear clothes reflecting multi-racial features． |
In paragraph 6, “they would be ‘intimate’” is closest in meaning to “______”.
| A．they would have physical contact | B．they would have in-depth talk |
| C．they would be close friends | D．they would exchange basic information |
From the passage, we can conclude that what Zeldin does is ______.
| A．an attempt to promote thinking interaction |
| B．one of the maddest activities ever conducted |
| C．a try to liberate people from old-fashioned ideas |
| D．an effort to give people a chance of talking freely |