单选题 I have told him several times that these young pines ______ watering twice a week.

单选题Thenumber of speakers of English in Shakespeare′s time is estimated to have beenabout five million.Today it is estimated that some 260 million people speak itas aan21language,mainlyin the United State

单选题 I liked to play football when I was young. ______

单选题Public goods are those commodities from whose enjoyment nobody can be effectively excluded.Everybody is free to enjoy the benefits of these commodities,and one person′s utilization does not reduce the

单选题It is kind__________you to do me a favor at this moment.

单选题 He was busy yesterday; otherwise he ______ to the meeting.

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单选题Scientists who study the brain have found out a great deal about how we learn.They have_____21_____that babies learn much more from the sights and sounds around them than we_____22_____before.You can?

单选题 Perhaps there is only the moon to compare with it. Of all the achievements of American engineering, only the landing on the moon and the planting there of a wrinkled flag can rival the construction of Panama Canal as an epoch-making accomplishment. The Suez Canal, the trans-Siberian Railroad and the Taj Mahal all pale beside it. The canal's construction is more closely akin to the pyramids of Egypt in its scope and difficulty of execution, but in the modern era, there is only the moon. Like the landing on the moon, the construction of a canal across the narrow Isthmus of Panama was a dream long before it became reality. As early as 1534, Charles I of Spain proposed a canal at Panama, but it would take nearly 400 years for builders to catch up with his imagination. When the canal finally was proposed required all the creativity the twentieth century could muster. It was the largest public work ever attempted. Its engineers had to control a wild river, cut the continental divide, construct the largest dam and man made lake known to that date and swing the largest locks ever constructed from the biggest cement structures then poured. Along the way, two of the world's most devastating diseases had to be wiped out in one of their greatest strongholds. And all of this was to be done without the airplane or the automobile: Kitty Hawk rose into the head-lines in 1903——the same year the U. S. signed a treaty with Panama——and there was no read across the isthmus until the World War Ⅱ. If Panama has had an unusual role in bygone dreams, it most certainly has a startling relationship to the hard facts of geography. The country is farther east than most people imagine——the canal and about half of Panama actually lie east of Miami. Because of the country's shallow 'S' shape and east-west orientation, it has places where the sun rises in the Pacific and sets in the Atlantic. More significantly, Panama is squeezed into the narrowest portion of Central. At the canal, just 43 miles of land separate Atlantic and Pacific shores. Perhaps even more important, Panama offers the lowest point in the North American continental divide——originally 312 feet above sea level at the canal's Culebra Cut. By comparison, the lowest pass in the United States is nearly 5,000 feet.

单选题A. Hold the line B. flight numberC. ask a question D. To New YorkE. May I have your name F. reconfirm my seatG. please check in H. On May 11thReservations clerk: Northwind Airlines. Can I help you?Daniel Adams: Hello. I'd like to 56 , please.Reservations clerk: May I have your name and 57 , please?Daniel Adams: My name is Daniel Adams and my flight number is 374.Reservations clerk: When are you leaving?Daniel Adams: 58 . Reservations clerk: And your destination?Daniel Adams: Buenos Aires.Reservations clerk: 59 , please. (...) All right. Your seat is confirmed, Mr. Adams. You'll be arriving in Buenos Aires at 4 o' clock p.m. local time.Daniel Adams: Thank you. Can I pick up my ticket when I check in?Reservations clerk: Yes, but 60 at least one hour before departure time.

单选题 Some college students drink too much alcohol at school. Many of them live on the campus. Heavy drinking has caused many problems. It can cause students to make bad choices and do dangerous things. One college has decided to ban alcohol. It has gotten a reputation as a party school. Five students at the college have died from drinking too much alcohol. Recently, one student drank too much vodka. He slipped into a coma. The college hopes the new rule will prevent any more tragedies. The new rule prohibits students from drinking alcohol in the dorms. The first time a student breaks the rule they will receive a warning. If they break the rule again, they will be evicted from the dorm. However, they will still have to pay for the dorm. Some students do not live on the campus. They live in houses near the campus. Those students are also banned from drinking alcohol, even if they are of legal age. Freshmen at the college are now required to take a special course. The course is called AlcoholEdu, and lasts for two and a half hours. The students learn about the dangers of alcohol. They also take a survey to find out how much they know about alcohol. All first-year students must pass the course. The college hopes that more information will help students make better choices.

单选题 Neither Tom nor John ______ a bike of ______ own.

单选题Jason:Where do you work,Andrea?Andrea:I work for Thomas Cook Travel.Jason:Oh,really?56Andrea:I′m a guide.I take people on toursto countries in South America,like Peru.Jason:57Andrea:Yes,it′s a great j

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单选题 ______ the students had to go to bed

单选题 He claimed that he would be a ______ in the presidential election, and would win the election at last.

单选题 —______ are you trying to prove to the police? —Where I was last night.

单选题 Sports and games make our bodies strong, prevent us from getting too fat, and keep us healthy. But these are not their only use. They give us valuable practice in making eyes, brain and muscles work together. In tennis, our eyes see the ball coming, judge its speed and direction and pass this information on to the brain. The brain then has to decide what to do, and to send its orders to the muscles of the arms, legs, and so on, so that the ball is met and hit back where it ought to go. All this must happen with very great speed, and only those who have had a lot of practice at tennis can carry out this complicated chain of events successfully. For those who work with their brains most of the day, the practice of such skills is especially useful. Sports and games are also very useful for character-training. In their lessons at school, boys and girls may learn about such virtues as unselfishness, courage, discipline and love of one's country, but what is learned in books cannot have the same deep effect on a child's character as what is learned by experience. The ordinary day-school cannot give much practical training in living, because most of the pupils' time is spent in classes, studying lessons. So it is what the pupils do in their spare time that really prepares them to take their place in society as citizens when they grow up. If each of them learns to work for his team and not for himself on the football field, he will later find it natural to work for the good of his country instead of only for his own benefit.

单选题__that your son is well again,you no longer have anything to worry about.

单选题 Justice, as well as the law, ______ that these robbers be severely punished.