单选题How much may a tusk in good condition sell for?

单选题Encouragement is sometimes much more ______ than criticism.

单选题England is not a big country: from north to south and from east to west (1) is only about three hundred miles (2) . But for a small country it has a (3) range of climates. People who have (4) visited England, or who have visited only (5) of it, often (6) of thinking that it is a cold and wet country. (7) the summer months of June to September, this is probably true of the (8) of England and Midlands. In the south, however, the (9) is much pleasant. One (10) is that when people retire from a job in the south they often prefer to (11) to the milder south. Perhaps the warmest (12) of the country is the southwest, which consists of the counties of Devon and Comwall. The (13) Gulf Stream flows across the North Atlantic Ocean from the Gulf of Mexico and makes the coastal regions of the (14) quite warm. Palm trees, bamboo and many semi-tropical plants grow (15) in the southwest of England. Flowers and vegetables ripen (16) a month earlier than those elsewhere. Farmers in the area obtain (17) for their vegetables and flowers because they are ready earlier. In winter there (18) several feet of snow in other parts of England (19) there will probably be no snow at all in the southwest. This may be (20) the southwest is one of England's most popular holiday areas.

单选题Living things are ______ cells, and cells do not grow to more than twice the size they wet at first.

单选题He used to get up late, ______?

单选题It suddenly ______ me how we could improve the situation.

单选题The director had her assistant ______ some hot dogs for the staff members. A. picked up B. picks up C. pick up D. picking up

单选题He is not _______ to recover from the injury in a week or two.

单选题Trees are useful to man in three important ways: they provide him with wood and other products; they give him shade; and they help to prevent droughts and floods. Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important. In his eagerness to make money from trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear. This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees, their roots break up soil—allowing the rain to sink in—and also bind the soil, thus preventing it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing remains but worthless desert. Two thousand years ago a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It set up the empire but, without its trees, its soil became poor and it grew weak. When the empire fell to pieces, the home country found itself faced with floods and starvation.

单选题One summer day my father sent me to buy wire for our farm. At 16, I liked (76) better than driving our truck, (77) this time I was not happy. My father had told me I'd have to ask for credit at the store. Sixteen is a (78) age, when a young man wants respect, not charity. It was 1976, and the ugly (79) of racial discrimination was (80) a fact of life. I'd seen my friends ask for credit and then stand, head down, while the store owner (81) whether they were "good for it." I knew black youths just like me who were (82) like thieves by the store clerk each time they went into a grocery. My family was (83) . We paid our debts. But before harvest, cash was short. Would the store owner (84) us?. At Davis's store, Buck Davis stood behind the cash desk, talking to a farmer. I nodded (85) I passed him on my way to the hardware shelves. When I brought my purchases to the cash desk, I said carefully, "I need to put this on credit./

单选题He took the medicine, but it didn't have any ______.

单选题Mike: Madam, do all the buses go downtown? Susan: ______

单选题——That car must have cost a lot of money.——Oh, no, ______.

单选题I can use a computer, but _____ it comes to repairing them, I know nothing.

单选题It is reported that 30 percent of the world population have no ______ to clean drinking water and health care.

单选题Either my parents or my elder brother ______ going to water the garden.

单选题Maradona will (face) a possible prison term (if) (finding) guilty (on) the shooting charges.

单选题All flights _____ because of the terrible weather, the Smiths had to go back to the hotel.

单选题{{B}}Passage 17{{/B}} "High tech" and "state of the art" are two expressions that describe very modern technology. High tech is just a shorter way of saying high technology. And high technology describes any invention, system of device that uses the newest ideas or discoveries of sci-ence and engineering. What is high tech? A computer is high tech. So is a communications satellite. A modern manufacturing (生产) system is surely high tech. High tech became a popular expression in the United States during the early 1980's. (17) {{U}}Because of improvements in technology, people could buy many new kinds of products in American stores, such as home computers, microwave (微波) ovens, etc.{{/U}} "State of the art" is something that is as modern as possible. It is a product that is based on the very latest methods and technology. Something that is "state of the art" is the newest possible design or product of a business or industry. A state of the art television set, for example, uses the most modern electronic design and parts. It is the best that one can buy. "State of the art" is not a new expression. Engineers have used it for years, to describe the best and most modern way of doing something. Millions of Americans began to use the expression in the late 1970's. The reason was the computer revolution. Every computer company claimed that its computers were "state of the art". Computer technology changed so fast that a state of the art computer today might be old tomorrow. The expression "state of the art" became common and popular as computers themselves. Now all kinds of products are said to be "state of the art".