Nuclear power’s danger to health, safety, and even life itself can be summed up in one word: radiation.
Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses. It can’t be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can’t detect them, sense them, without a radio receiver. Similarly, we can’t sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being immediately by killing masses of cells in vital organs. But even the lowest levels can do serious damage. There is no levels of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and if they are killed immediately, your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They can grow into cancer. Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the victim being aware at the time that damage has occurred. A person can be irradiated（辐射）and feel fine, then die for cancer five, ten, or twenty years later as a result. Or a child can be born weak as a result of radiation absorbed by its grandparents.
Radiation can hurt us. We must know the truth.What is the main idea of the passage?
| A．How to detect nuclear radiation. |
| B．How radiation kill a man. |
| C．The mystery about nuclear radiation. |
| D．Serious damage caused by nuclear radiation. |
Which of the following statements is true?
| A．Nuclear radiation can cause cancer to human beings. |
| B．Nuclear radiation can be safe to human beings if its level is low. |
| C．Nuclear radiation can be detected by human senses. |
| D．Nuclear radiation is just like common radio waves. |
What is not the reason why nuclear radiation has a certain mystery?
| A．The hurt cells can stay in the body many years and then grow into cancer. |
| B．It can do harm to a person while the victim isn't aware the damage has occurred. |
| C．Nuclear radiation can kill a person very easily. |
| D．Radiation can seldom kill a person immediately. |
If a human being is hit by nuclear radiation, he may _______.
| A．die of cancer after many years | B．die immediately |
| C．have a child who may be born weak | D．all of the above |
Growing strawberries in pots
·The best way to start growing strawberries is to buy pot-grown strawberry plants m spring：5 plants are plenty for a hanging basket and 10 for the average 13 inch-sized pot．
·Plant them immediately in soil-based compost（混合肥料） and they will produce a modest crop in their first year．The second year should see a bumper（特大的）crop，followed by a slightly lower yield（产量）the third summer ．Then start again with fresh stock ．
·Careful watering and feeding are essential If you are to harvest a good crop，you must never let the compost dry out, particularly when the fruit is forming and ripening；if you do．most of your crop will drop off血e bush almost immediately．
·Water well then leave the pots for up to 3 weeks，until they reach the point of drying out be careful not to overwater them during the winter months．
Pruning apple trees
·A one-year-old tree is known as a “maiden”．It has a single stem when purchased．Immediately after planting, cut it back by about half to leave 4 good buds at the base of the stem．．This will force growth from the base or the plant during the summer．
·In the second year ,prune in winter by cutting all side branches back by about one-third, Make sure each cut is made cleanly just above an outward-facing bud．In the third and fourth years, new side branches will have emerged from the previous year’s growth．Cut back all these new side branches by a third, pruning to an outward-facing bud．
·By the fifth year the tree should have a well-balanced shape．From then on ,cut back all new branches by one-third in winter．Remove any diseased wood and broken branches, and ensure the centre is open to air circulationThe two pieces of advice probably appear in_________
| A．a scientific repot | B．a gardening guide |
| C．a book review | D．a fashion column |
A good crop of strawberries mainly depends on_________
| A．the size of a pot |
| B．the season of harvesting |
| C．the number of plants in a pot |
| D．careful watering and feeding |
Cutting back all side branches by a third is to__________
| A．remove the diseased and broken branches |
| B．keep the whole tree open to air circulation |
| C．force the apple tree to grow from the base in winter |
| D．help the apple tree to form a well-balanced shape |
The two pieces of advice suggest that planting is closely related to_______
| A．season | B．water | C．compost | D．cutting |
The breaking news of Mo Yan's Nobel Prize in Literature on Thursday evening soon aroused public curiosity of the 57yearold Chinese writer: Why was it him that was favored by the Swedish Academy?
Born in 1955 into a rural family，Mo dropped out of school and became a farmer when he was a teenager．He joined the military and devoted himself to writing after the Cultural Revolution （1966－1976）．
Less than half an hour after the announcement，Mo's works turned to soldout status at China's major online book sellers．One lucky buyer wrote in an online comment: “Rushed to purchase，but to my shame，I have not read any of his novels．”
Although Mo was entitled one of the top domestic literature awards before the Nobel Prize，he is not the most popular novelist in China，in either the book market or in reputation．
Mo's novel “Big Breasts & Wide Hips，” translated by Howard Goldblatt，tells a story of a mother who struggled and suffered hardship and intertwined fates with Chinese people in the 20th century．His more recent work “Frog” more directly criticized China's onechild family policy，which helped control the country's population explosion but also brought tragedies to rural residents in the past 60 years．
“I think the reason why I could win the prize is because my works present lives with unique Chinese characteristics，and they also tell stories from a viewpoint of common human beings，which is above differences of nations and races，” Mo said on Thursday evening to Chinese journalists．Mo also said many folk arts originated from his hometown，such as clay sculpture，paper cuts，traditional new yearpaintings，have inspired and influenced his novels．
With more Chinese writers like Mo，the world could learn a more real China．Perhaps，this is another reason for the Swedish Academy's choice．What can we conclude from the second paragraph?
| A．Mo's life experiences． |
| B．Mo's family life． |
| C．Mo devoted himself to writing． |
| D．Mo had a gift for writing． |
What can we infer from the passage?
| A．Mo didn't got any national awards before he won the Nobel Prize． |
| B．Mo was the top novelist in China before he won the Nobel Prize． |
| C．Mo's novels have attracted many people to read． |
| D．Mo's novels are all based on his daily life． |
Which of the following have no effect on Mo's novels according to the passage?
| A．Clay sculpture． | B．Paper cuts． |
| C．Folk arts． | D．Beijing opera． |
According to the passage，we know that________．
| A．Big Breasts & Wide Hips' leading role is one happy mother |
| B．Big Breasts & Wide Hips criticized China's onechild family policy |
| C．Frog came out earlier than Big Breasts & Wide Hips |
| D．Frog shows benefit as well as shortcoming of one China's policy |
The kindly “Chinese Fortune Grandpa” wearing Han Chinese clothing and holding a fortune bag debuted （亮相） at the Imperial Ancestral Shrine in Beijing on the day after Christmas．The final image of the Chinese gift-giver was selected through a global design competition against “Santa Claus”，according to a report by Guangming Daily．
Many Chinese cities have been filled with Christmas neon lights，Christmas songs，Christmas trees，and the images of “Santa Claus”in recent days．As a matter of fact，foreign festivals are becoming more popular than certain traditional Chinese festivals among the Chinese people，particularly the youth．“Certain traditional festivals have died out because people have forgotten their spiritual meanings，”said noted writer Feng Jicai．More and more Chinese people are beginning to exchange gifts on Valentine's Day and Christmas．However，many of them know nothing about Chinese New Year pictures or sugarcoated figurines（小糖人），and have never heard suona music．Certain folk customs on the Dragon Boat Festival，Tomb Sweeping Day，and other traditional festivals have gradually disappeared．Under such circum-stances，even the “Chinese Fortune Grandpa” is unlikely to defeat “Santa Claus”．
However，it is not a bad thing to some extent．It constantly reminds people to restore the “true face” of traditional festivals．China has listed traditional Tomb Sweeping Day，Dragon Boat Festival and Mid-Autumn Festival as legal holidays，which brings more paid leaves to the public，and helps to awake the public awareness of traditional festivals．
In modern society，festival is a carrier of culture and its meaning largely depends on their understandings and usages by people．Compared with foreign festivals，traditional Chinese festivals are not inferior （次于） in cultural meanings，but lack of fashion sought by modern people．If people do not appreciate the historical culture contained by traditional festivals，and only take pleasure-seeking as the most important，the significance of traditional festivals will fade away and the inheritance （继承） of fine traditional culture will be cut off．
The second paragraph implies that______________________．
| A．traditional festivals should co-exist with foreign festivals |
| B．all the Chinese festivals are disappearing in the near future |
| C．western festivals are constantly impacting on our festivals |
| D．the Chinese people have the public awareness of traditional festivals |
We can learn from the passage that______________．
| A．an image designed by the Chinese people will be displayed |
| B．the Chinese gift-giver was intended to symbolize traditional culture |
| C．many foreigners know nothing about Chinese festivals |
| D．the Chinese are beginning to exchange gifts on the Mid-Autumn Festival |
Many Chinese youth dislike traditional festivals because they think______________．
| A．traditional festivals are out of fashion now |
| B．the historical culture is more difficult to understand |
| C．western festivals contain more cultural meanings |
| D．the inheritance will cut off their contact with western festivals |
What would be the best title of the passage?
| A．Gone are Chinese Traditional Festivals |
| B．True Face of Chinese Traditional Culture |
| C．Foreign Festivals Popular with Chinese |
| D．Chinese Fortune Grandpa VS．Santa Claus |
On June 15th，2012，millions of people watched as 33yearold Nik Wallenda walked across one of the world's greatest waterfalls on a tightrope（钢丝）．What made the 25－minute walk that was televised live and watched by over 13 million people worldwide even more amazing，is that it was done over the Niagara Falls－An action that had never been attempted before．
Even though Nik was wearing a harness（保护带），a safety measure provided by ABC，the television network that broadcast the event，his action to keep his balance against the strong winds made for some heart－stopping（令人担忧的） moments for the audience．
Nik，however，never slowed down for even one moment．Wearing special shoes made by his mother，he remained totally focused on the job at hand．It was only when he got to the last stretch near Canada's Table Rock that he knelt down on one knee and finally broke into a smile．Waving and blowing kisses to the cheering audience，he knew he had accomplished a great task，which most people had thought impossible．
While he described the whole experience as peaceful and relaxing，Nik said his biggest challenges came from a totally unexpected source－his 40 pound balancing pole．The balancing pole was so heavy that he could hardly carry it on the tightrope．
One would think that now that Nik has realized his lifelong dream he would be ready to hang up his “balancing pole”．However，the adventurer who already has seven Guinness World Records under his belt，is just getting started－Next up? A 5，000－foot tightrope walk across the Grand Canyon．While the one across the Niagara Falls took years of planning because he had to convince the US and Canadian officials，this one should happen in the very near future．That's because，the Florida resident has already been granted（授予） a permit by the Canyon officials．Why did so many people fix their attention on the event?
A．Because it was done by Nik Wallenda．
B．Because nobody had done it there before．
C．Because it was broadcast live by ABC．
D．Because it was impossible to do the event．What made the audience hold their breath during Nik's performance?
| A．How Nik managed to cross the Niagara Falls with safety measure． |
| B．What Nik would do when he lost his balance on the tightrope． |
| C．How Nik kept his balance against the strong winds． |
| D．How long Nik will take to finish the event． |
What was the greatest difficulty for him to face in Nik view?
| A．The supplied tightrope． |
| B．The safety belt． |
| C．The balancing pole． |
| D．The audience's noise． |
What does the last paragraph mainly talk about?
| A．Nik will go on with his dream． |
| B．Nik's life dream is changing． |
| C．Permission of governments is important． |
| D．The Grand Canyon is a dream for Nik． |
Centuries ago, man discovered that removing moisture(潮湿)from food helps to store it, and that the easiest way to do this is to expose the food to sun and wind. In this way the North American Indians produce pemmican(dried meat ground into powder and made into cakes), the Scandinavians make stockfish and the Arabs dried dates.
All foods include water—cabbage and other leaf vegetables contains as much as 93% water, potatoes and other root vegetables 80%, lean meat 75% and fish, anything from 80% to 60%, depending on how fatty it is. If this water is removed, the activity of the bacteria(细菌)which cause food to go bad is checked.
Fruit is sun-dried in Asia Minor, Greece, Spain and other Mediterranean countries, and also in California, South Africa and Australia. Various methods are used, but in general, the fruit is spread out on trays in drying yards in the hot sun.
Nowadays most foods are dried mechanically. The method of such dehydration(脱水)is to put food in chambers through which hot air is blown at temperatures of about 110℃ at entry to about 43℃ at exit. This is the usual method for drying such things as vegetables, minced(切碎的)meat, and fish.
Dried foods take up less room and weigh less than the same food packed in cans or frozen, and they do not need to be stored in special conditions. For these reasons they are invaluable to the climbers, explorers and soldiers in battle, who have little storage space. They are also popular with housewives because it takes so little time to cook them. Usually it is just a case of replacing the dried-out moisture with boiling water.According to the text, the open-air method of drying food.
| A．is the one most commonly used today |
| B．was invented by the American Indians |
| C．has been known for hundreds of years |
| D．tends to be unhealthy |
Bacteria which cause food to go bad.
| A．cannot live in sunlight |
| B．are killed by drying |
| C．are in no way dependent on the water contained |
| D．have their activity greatly reduced by drying |
Today vegetables are most commonly dried .
| A．on hot and sunny days | B．in hot-air chambers |
| C．in the sun and wind | D．using the open tray method |
Housewives like dried foods because they .
| A．are quick to prepare |
| B．taste better than fresh foods |
| C．can be packed in a case |
| D．look fresh when cooked |