—Mary broke up with me!
—You _____ have forgotten about the Valentine's Day．
A．shouldn't B．couldn't C．needn't D．mustn't
Crossing roads without taking traffic lights into consideration, _____ they are part of a crowd, has been labeled as the “Chinese style of crossing roads”.
A．since B．as if C．though D．so long as
最近许多城市常被雾霾（haze）所笼罩，请就这一话题谈谈你的看法。文章必须包括：
描述雾霾天气的景象
提出解决这一问题的建议
Translate the following sentences into English, using the words given in the brackets.
1.许多驾驶员对新的交通法规都感到不习惯。(use)
2.传统的火车票购买方式已经被网络购买方式所取代了。(replace)
3.过不了几天他们就会把面试结果寄给你的。(It)
4.我们非常关心食品质量，因为它与每一个人的健康都息息相关。(concern)
5.那些消防战士冒着生命危险把困在着火的屋子里的老人和小孩全部救了出来。（trap）
Read the passage carefully. Then answer the questions or complete the statements in the fewest possible words.
Children and adolescents who watch a lot of television are more likely to have antisocial and criminal behavior when they become adults, according to a new University of Otago, New Zealand, study published online in the journal Pediatrics. The study followed a group of around 1,000 children born in the New Zealand city of Dunedin in 1972-1973. Every two years between the ages of 5 and 15, they were asked how much television they watched. Those who watched more television were more likely to have a criminal conviction and were also more likely to have antisocial personality traits in adulthood.
The study found that the risk of having a criminal behavior by early adulthood increased by about 30% with every hour that children spent watching TV on an average weeknight.
The study also found that watching more television in childhood was associated, in adulthood, with aggressive personality, an increased tendency to experience negative emotions, and an increased risk of antisocial personality disorder; a psychiatric disorder characterised by persistent patterns of aggressive and antisocial behavior.
The researchers found that the relationship between TV viewing and antisocial behavior was not explained by socio-economic status, aggressive or antisocial behavior in early childhood, or parenting factors.
A study co-author, Lindsay Robertson, says it is not that children who were already antisocial watched more television. “Rather, children who watched a lot of television were likely to go on to manifest antisocial behavior and personality traits.”
Other studies have suggested a link between television viewing and antisocial behavior, though very few have been able to demonstrate a cause-and-effect sequence. This is the first ‘real-life’ study that has asked about TV viewing throughout the whole childhood period, and has looked at a range of antisocial outcomes in adulthood. As an observational study, it cannot prove that watching too much television caused the antisocial outcomes, but the findings are consistent with most of the research and provides further evidence that excessive television can have long-term consequences for behavior.
Antisocial behavior is a major problem for society. While we’re not saying that television causes all antisocial behavior, our findings do suggest that reducing TV viewing could go some way towards reducing rates of antisocial behavior in society,” says Associate Professor Hancox.
The American Academy of Pediatrics recommends that children should watch no more than 1 to 2 hours of quality television programming each day. The researchers say their findings support the idea that parents should try to limit their children's television use.
(Note: Answer the questions or complete the statements in NO MORE THAN TEN WORDS.)
1.The aim of the study is to reveal ______________________________________________.
2.The researchers chose __________________________________________ as their research subjects（研究对象）.
3.What’s the shortcoming of most of the studies on this topic?
__________________________________________________________.
4.What do you suppose many parents will do after reading this passage?
__________________________________________________________.
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. Factors that influence reactions to pollutants
B. Possible sources of indoor air pollution
C. Ways to identify diseases with similar symptoms
D. Long-term effects after repeated exposure
E. A commonly-ignored health threat
F. Immediate symptoms and regular treatment
1.Most people are aware that outdoor air pollution can damage their health, but many do not know that indoor air pollution can also have significant health effects. Environmental Protection Agency studies indicate that indoor levels of pollutants may be 2-5 times, and occasionally more than 100 times, higher than outdoor levels. These levels of indoor air pollutants may be of particular concern because most people spend about 90％ of their time indoors.
2.There are many sources of indoor air pollution in any home. These include combustion sources such as oil, gas, coal, wood, and tobacco products; building materials and furnishings as diverse as deteriorated asbestos-containing insulation, wet or damp carpet, and cabinetry or furniture made of certain pressed wood products; products for household cleaning and maintenance, personal care, or hobbies; central heating and cooling systems and humidification devices; and outdoor sources such as radon, pesticides, and outdoor air pollution.
3.Immediate effects may show up after a single exposure or repeated exposures. These include irritation of the eyes, nose, and throat, headaches, dizziness, and fatigue. Such immediate effects are usually short-term and treatable. Sometimes the treatment is simply eliminating the person's exposure to the source of the pollution, if it can be identified. Symptoms of some diseases, including asthma, hypersensitivity and fever, may also show up soon after exposure to some indoor air pollutants.
4.The likelihood of immediate reactions to indoor air pollutants depends on several factors. Age and pre-existing medical conditions are two important influences. In other cases, whether a person reacts to a pollutant depends on individual sensitivity, which varies tremendously from person to person. Some people can become sensitized to biological pollutants after repeated exposures, and it appears that some people can become sensitized to chemical pollutants as well.
5.Certain immediate effects are similar to those from colds or other viral diseases, so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution. For this reason, it is important to pay attention to the time and place the symptoms occur. If the symptoms fade or go away when a person is away from the home and return when the person returns, an effort should be made to identify indoor air sources that may be possible causes.
