单选题 阅读下列短文，从每题所给的四个选项([A]、[B]、[C]和[D])中选出最佳选项。{{B}}A{{/B}} {{B}} Tobacco{{/B}} You most likely know that tobacco is a plant. It has large leaves that have been smoked in many forms for at least 2 000 years. But do you know that: Before the twentieth century, not many people died from using tobacco because there wasn't much tobacco being used. Cigarettes had to be rolled by hand. A person who was really fast could roll about four cigarettes a minute, or around 2 000 a day. In 1884 the cigarette manufacturing machine was invented that could produce 120 000 cigarettes a day. Soon the number being sold rose to one billion a year. As a result of advertising and efficient machines, the tobacco business continued to grow. Today about 840 packs of cigarettes are sold every second in the US. That's more than one million every hour! Imagine that! Blink you eyes and 840 packs are s01d. Blink again -- another 840 packs! As the number of cigarette sales increased, so did the number of deaths caused by cigarettes. Today one out of every five people who die in the US dies because of smoking. Smoking tobacco is responsible for more deaths than cocaine, heroin, alcohol, fire, automobile accidents, homicides, suicides, and AIDS combined. That amounts to about 430 000 people who die needlessly every year, 1 200 people who die every day because of their addiction to cigarettes. It's like having several completely full jumbo jets crash every day, killing all aboard!{{B}} Who in the USA Smokes{{/B}} Cigarette smoking is a widespread habit in the United States today. About forty-three percent of the adult men and thirty-one percent of the adult women smoke regularly. It is quite encouraging to note,however,that millions of people have given up the smoking habit. Seventy-five percent of the male population and forty-six percent of the female population have smoked cigarettes at some time during their lives, but twentysix percent of these men and eleven percent of these women have stopped smoking. The number of persons who have given up smoking is increasing. Men as a group smoke more than women. Among both men and women the age group with the highest proportion of smokers is the age group 24～44. Income, education and occupation play a part in determining a person's smoking habits. City people smoke more than people living on farms. Well-educated men with high incomes arc less likely to smoke cigarettes than men with fewer years of schooling and lower incomes. On the other hand, if a well-educated man with a higher income smokes at all, he is likely to smoke more packs of cigarettes every day. The situation is somewhat different for women. There are slightly more smokers among women with higher family incomes and higher education than among the lower income and lower educational groups. These more highly educated women tend to smoke more heavily. Among teenagers the picture is similar. There are fewer teenage smokers from upper-income, well-edu-cated families, and from families living in farm areas. High school students who are preparing for college are less likely to smoke than those who do not plan to continue their education after high school. Children are most likely to start smoking if one or both of their parents smoke.

单选题—Are you still there?—Yes, the storm prevented us ______ yesterday.

单选题"And the word 'green' today can keep food prices going up. "This sentence suggests that consumers today are ______.

单选题The new plan exists only______paper, and it won't work______practice.[A] on... in[B] on... on[C] in... in[D] in... on

单选题Why did the man borrow the woman’s computer last time?

单选题一What did Mr.Jones do before he came to this company?一He __________ a city bus for over twenty-five years.

单选题He has made another discovery, ______ of great importance to science. A. which I think it is B. of which I think it is C. which I think is D. I think which is

单选题Camille and Mike Geraldi are married and live with their children near Miami, Florida in the U.S.A. Mike is a doctor. Camille is a housewife and former nurse. They sound like an average family. In some ways they are, but in many ways they are not. Tile average family in the U.S. has two or three children. The Geraldis have seventeen children. That is not all. Fifteen of these seventeen children are adopted children between the ages of one and nine. Each of the adopted children has a severe physical or mental disability (丧失能力). A day with the Geraldi family is not average. Camille wakes up before dawn. She and three helpers wake, wash, dress, and feed the seventeen children. After breakfast, eleven of the children go to special schools. At 7:30, Camille takes a nap for two hours. When she wakes up at 9:30, she feeds and plays with the children. Camille cooks dinner before Mike comes home from work. Mike cleans up after dinner. Camille is busy even at night. She often wakes up to take care of the children who need her. She almost never has a full night's sleep. Camille and Mike try to plan time for each other. Every Wednesday, they have a lunch "date" and every other Saturday, they go away by themselves for the day. Camille says, "It fulfills me to help these children. It makes our life full." Camille loves her life. She looks at other people and thinks, "What a dull life they have." In many ways, the Geraldis are not an average family. However, in some ways, they are. Like most families, they laugh and cry together and love each other a lot.

单选题To find out what the weather is going to be, most people go straight to the radio, television or newspaper to get an expert weather forecast. But if you know what to look for, you can use your own senses to make weather predictions (预测). There are many signs which can help you. For example, in fair weather the air pressure is generally high. The air is still and often full of dust. Faraway objects may look misty. But when a storm is gathering, the pressure descends and you are often able to see things more clearly. Sailors took note of this long ago and came up with a saying "The farther the sight, the nearer the rain." Your sense of smell can also help you detect weather changes. Just before it rains, odors become stronger. This is because odors are suppressed (抑制) in a fair, high-pressure center. When a bad weather low (低气压去) moves in, air pressure lessens and odors are released. You can also hear an approaching storm. Sounds bounce off heavy storm clouds and return to earth with force. An old saying describes it this way:" Sound travelling far and wide, a stormy day will betide (发生)." And don"t laugh if your grandmother says she can feel a storm coming. It is commonly known that many people feel pains in their bones when the humidity grows, the pressure drops, and bad weather is on the way.

单选题When was ______ you had the get-together(联欢)with the soldiers?A. that,it B. this,it C. it, that D. this, that

单选题She is ______ interested in physics. She often works at it until ______ into the night.

单选题Whydidthemangethomelate?

单选题— Must we take a bus.'? — No, you ______. You can walk from here.[A] mustn't[B] don't need[C] don't have to[D] had better do

单选题Customers are found to be more satisfied ______ the quality of the goods than their service.[A] about[B] at[C] with[D] by

单选题More than one teacher ______ told him it is important that he learn English well if he ______ abroad.

单选题We can not see things very clearly ______ the fog.

单选题______ some of her wild behavior has been inspired by those awful cartoons she watches.