单选题Is there a connection between ______ you eat and maintaining good health?

单选题The time will come ______ man can fly to outer space freely. A. that B. when C. in that D. which

单选题The reflective towers of New York City, which is on the Atlantic migrating (迁徙的) route, can be deadly for birds. "We live in an age of glass," said Ms. Laurel, an architect. (76) "It can be a perfect mirror in certain lights, and the larger the glass, the more dangerous it is." About 90,000 birds are killed by flying into building in the city each year. Often, they strike the lower levels of glass towers after searching for food in nearby parks. Such crashes are the second-leading cause of death for migrating birds, after habitat (栖息地) loss, with an estimated number of death ranging up to a billion a year. (77) As glass office and apartment towers have increased in the last decade, so, too, have calls to make them less deadly to birds. San Francisco adopted bird-safety standard for new building in July. The United States Green Building Council, a nonprofit industry group that encourages the creation of environmentally conscious buildings, will introduce a bird-safety credit this fall as part of its environmental certification process. There are no easy fixes, however. A few researchers are exploring glass designs that use ultraviolet (紫外线的) signals, but they are still in their infancy. Covers, dot patterns, shades and net are the main options available. Often, only one section of a building needs to be changed. "You don't necessarily have to treat every window," Ms. Laurel said. "It would be too expensive to do the whole building." The Jacob K. Javits Convention Center, which has been undergoing alterations, is the most recent building to voluntarily correct the problem of bird crashes. The architects used less reflective glass and dot patterns.

单选题(Of) the two coats, (I"d choose) (the cheapest) one to spare some money (for) a book.

单选题Modern mass-production methods lower the cost of making goods, and thus give us better values. At the same time,American ingenuity (独创性) and science are constantly at work improving the quality of products. (79) In this way, better quality products at good values are continually being brought to the people of all income groups. As an example of how this worked, when facial tissues (面巾纸) were first put on the market in 1924, they were made in limited quantities and sold at 65 cents per box of 200. People like these facial tissues immediately and began asking for them when they went into different stores. Because there was such a demand for the product, manufacturers began making tissues in larger and larger quantities. Because the manufacturers were making tissues in greater quantities, their production costs were lowered, so that the price of tissues went down. (80) In the meanwhile, the quality of facial tissues was constantly improving, because more manufacturers went into the business of making tissues, and each manufacturer strove to make his product better than his competitors'. Today, instead of costing 65 cents, a box of 200 tissues costs around one-third of that price, and they are both softer and stronger. When people are free to compete--when they are free to make more things and make them better---everyone benefits.

单选题While popular in the U.S., the April Fool's Day tradition is even more prevalent in European countries, such as France and Great Britain. Although the roots of the traditional tricking are unclear, the French and the British both have claims on the origin of the celebration. One theory holds that the first April Fool's Day was on April 1 of the year when King of France instituted the new calendar. This new system placed the day that had formerly been the first day of a new year on April 1. Many people were reluctant to adjust to the new calendar and continued to celebrate New Year's Day on what had become the first day of April. Thus, they became the first April Fools. An English story about the day, however, holds that it began sometime during the 1200s. At the time, King John of England was in the habit of making a road out of nearly every path he walked regularly. The citizens of one particular farm village were aware of this. To avoid having their green meadows and pastures disturbed with one of the king's roads, they built a fence that prevented the king from walking through their countryside. The king sent a group of messengers to inform that they must remove the barrier. Upon hearing that the King was planning to do this, however, the villagers developed a plan of their own. When the messengers arrived, they found what appeared to be a community of lunatics, with people behaving in a bizarre manner, throwing things and running around wildly. The messengers, alarmed at what they had found, reported to King John that these people were so mad as to be beyond punishment. So, the villagers saved their farmland by tricking the King. In Great Britain, tradition only allows April Fool's tricks from midnight to noon on April 1. Those who try to play tricks in the afternoon become the fools themselves.

单选题--Where did you have your supper? ______ A. With my uncle B. At my uncle home C. At my uncle D. At my uncle's

单选题The (three-fields) system is an agricultural method in which one field (out of) (three) is (left) to lie fallow while the other two fields are being cultivated.

单选题{{B}}Passage 45{{/B}} Do you ever feel sick, confused, or very tired after a long plane ride? If you were fly-ing east to west or west to east, the problem could have been jet lag. (45) {{U}}Jet lag happens when your body's time clock becomes confused.{{/U}} Crossing several time zones may make you feel very tired. You may become confused because you are tired. In fact, you may become so confused that you won't be able to do your work. You might get headaches and feel that you have problems eating and sleeping. These are all symptoms of jet lag. However, if you feel tired after flying from north to south or south to north, you do not have jet lag. Maybe you feel tired from the tiredness and work of getting ready for the trip. You will feel better after you get some sleep. The symptoms that you feel during a flight, such as thirst and motion sickness, are not jet lag either. They are caused by the air pressure in the plane. When you travel north or south, you do not cross time zones. So you do not have true jet lag.

单选题By no means (　　)our mistakes.

单选题You ______ not have seen her yesterday, for she was abroad.

单选题I am certainly lucky to have a kind wife who is loving ______.

单选题I ______ you a happy birthday.

单选题The paint on my coat ______ out. I'm thinking of going to the laundry. A. is not washed B. doesn't wash C. shall not wash D. must wash

单选题Without computers, much of the advanced technology ______ A. would not be achieved B. would not be achieve C. haven't achieved D. would not have been achieved

单选题Chicago: I think I need much money, but my wife does not think so. ______? Dennie Hughes: What do you need "much money" for? Perhaps your wife is a very organic, simple needs person. Have you ever explained what the actual money is for?