单选题The packing of goods offered does not meet our standards. Could you use packing which is ______breakage?

单选题In China discoveries (from) more than 100 sites (along with) the Yangtze River showed that rice (cultivation) began 11,500 years ago (rather than) 8,000.

单选题Every time I listen to Tchaikovsky, I found myself ______ in the beauty of the works by one of the most artistically creative composers.

单选题Always protect______files by locking them with a password.

单选题He felt that the uninspiring routine of office work was too______for someone of his talent and creativity.

单选题It is bad manner to ______ other people behind their backs.

单选题A solar cell takes radiation from the sun and ______it into electricity.

单选题The world"s supplies of copper______.

单选题Should the Seller fail to perform the contracted obligations 10 weeks after the aforesaid incident, the Buyer shall have the right to treat the contract as______.

单选题Passage Two The value of heat for the preservation of food has been known for thousands of years, but it was not realized until the nineteenth century that a very mild heat treatment far below the boiling point, made liquid foods such as milk keep much longer. The discovery followed the work of the French scientist Louis Pasteur on wine and beer. The process, called after him "pasteurization", is a carefully controlled mild heat treatment. It was found that the process served two purposes, it prevented the souring of milk, and it destroyed the dangerous disease germs which sometimes occur in this product. It has long been known to bacteria experts that the tubercle bacillus is the germ in milk which host strongly resists heat treatment. To destroy this organism it is necessary to heat milk to about 60 degrees centigrade for 15 minutes, and its destruction has always been taken as a way of testing the efficiency of pasteurization. A heat treatment of this kind destroys about 99 percent of the common bacteria in milk, including nearly all those which cause milk to turn sour. To ensure the certain destruction of tuberculosis and other disease germs in milk, it must be held at a fixed temperature for a fixed time. In Britain, for example, these conditions were defined-coy law in 1923 as 63-66 degrees centigrade for 30 minutes. This became known as the "holder" process, since the raw milk had to be pumped into a large tank, heated to just over 63 degrees centigrade, held in the tank for half an hour and then pumped out and cooled. This was a slow process and required a very large plant, so scientists worked for many years to produce a simpler, more convenient method, with less large equipment. The latest method, officially approved in Britain in 1949, is known as the high-temperature-short-time, or H. T. S. T. method. It has now almost entirely replaced the "holder" process. In the H. T. S. T. system, the milk flows continuously through many sections of thin stainless steel pipes, During the process, the milk is held at 72 degrees centigrade for at least 15 seconds then, as it-cools, the heat is used, in part, to raise the temperature of the incoming milk in a device called a "wheat exchanger". Efficient pasteurization may reduce the bacteria in raw milk from, say, one million to only a few thousand per cubic centimeter. The bacteria left are chemically mostly of the inert type, thatis, they either do not.

单选题Yesterday he got up earlier than ______, for it was not a/an ______ day for him. A. before; same B. usual; ordinary C. ever; first D. regular; normal

单选题You should______the wheels of your bicycle to reduce the friction.

单选题______, he would not have recovered so soon.

单选题A fossil is a remnant of a once-living organism.

单选题Ever since the 19th century cartoonist Thomas Nast to pin a donkey on the Democrats and the elephant on the Republican, cartoonists have been mapping the iconography of American politics.

单选题Although Heron is well known for the broad comedy in the movies she has directed previously, her new film is less inclined to ______: the gags are fewer and subtler. A. understatement B. preciosity C. symbolism D. melodrama

单选题The mayor of the city is a ______ old man.

单选题The winds of the earth behave in accordance with one simple pattern: equalize the surface temperatures by carrying heat away from the equator and moving it towards the poles. Because the process is enormous in scale, it involves complex intricacies which account for the unpredictability of weather despite the modern tools available to the forecaster. However, there are two observable features of global atmospheric circulation which are particularly applicable to North America. One is the gentle, yet persistent, sinking current which falls from the upper atmosphere. Such subsidence is the end of the global convection cycle which begins with updrafts of warm air near the equator; the air loses moisture as it rises and begins to migrate towards the poles. At approximately thirty degrees latitude the air begins to sink, creating the hot, dry conditions common in the southwestern U.S. throughout the year, but especially during the summer. The other significant part of the worldwide phenomena is known as the jet stream, a shifting belt of high-speed winds blowing from the west across the width of the continent at high latitudes. The path of these rapid breezes on any given day is a key to predicting the surface conditions. During the summer months, the winds are generally along the Canadian border, although they may alter their course as high as Alaska or as low as Louisiana. The jet stream generally pulls wet air into Washington, Oregon and Canada from the Pacific Ocean. In the lower regions of North America, its effect is almost the opposite: the warm air from the deserts of Mexico and the southwestern U. S. is pulled towards the jet stream causing higher temperatures throughout the area. In the East, however, the cool air from the Gulf of Mexico is drawn up by the jet creating a cooling effect for the South and Midwest. In the winter, the jet moves to lower latitudes resulting in greater rainfall for southwestern states while the cool Canadian air causes winter storms in the northern areas.

单选题The ultimate aim is to find an acceptable solution. Such as to convince them to continue the contract and accept the delivered equipment.

单选题When the whole area was ______ by flood, the government sent food there by helicopter.