单选题We were astonished to hear that their football team had won the champion.

单选题Walk along this corridor, and you will see" the queen's private {{U}}chamber{{/U}}.

单选题Mother told me to take an umbrella with me; it might Ucome in handy/U, she said.

单选题National forests make money for the government through the sale of trees for lumber.

单选题These machines are not regulated ______ but are jointly controlled by a central computer system.A. inevitablyB. individuallyC. irrespectivelyD. irregularly

单选题The sports meeting is put off because of the bad weather.A. heldB. delayedC. spreadD. conducted

单选题He was a very smart boy but he made a foolish decision this time.A. cleverB. honestC. braveD. dull

单选题He have Umade up his mind/U to give up smoking.

单选题Thomas Fuller was so skilled at mathematics that he was known in the eighteenth century as the "Virginia Calculator. " A. fascinated by B. articulate about C. proficient in D. suspicious of

单选题Millions of Americans flock to their drugstores to buy vitamins and minerals, ______ that these pills cart help prevent serious illnesses.A. convincingB. convincedC. to convinceD. to be convinced

单选题Five minutes left, the outcome of the match was still in doubt.

单选题For many people today, reading is no longer relaxation. In (51) a job or advancing in one, the ability to read and comprehend (52) can mean the difference between success and failure. Yet the unfortunate, fact is that most of us are (53) readers. Most of us develop poor reading (54) at an early age, and never get over them. The main deficiency (55) in the actual stuff of language itself-words. Taken individually, words have little meaning until they are strung together into phrased, sentences and paragraphs. (56) however, the untrained reader does not read groups of words, He laboriously reads one word at a time, often regressing to (57) words or passages. Regression, the tendency to look back over (58) you have just read, is a common bad habit in reading. Another habit which (59) down the speed of reading is vocalization-sounding each word either orally or mentally as one reads. To overcome these bad habits, some reading clinics use a device called all (60) , which moves a bar( or curtain)down the page at a predetermined speed. The accelerator forces the reader to read fast, (61) word-by-word reading, regression and sub-vocalization, practically impossible. At first comprehension is sacrificed for speed. But when you learn to read ideas and concepts, you will not only read faster (62) your comprehension will improve. Many people have found-their reading skill drastically improved after some training. (63) Charlce Au, a business manager, for instance, his reading rate was a reasonably good 172 words a minute (64) the training, now it is an excellent 1,378 words a minute. He is delighted that how he can (65) a lot more reading material in a short period of time.

单选题There are animals which do not attempt to leave at the first sign of winter cold. Their instinctive means of defense is to dig out a deep burrow, made soft and warm by padding out with straw, leaves, moss and fur. In it they have a "secret place" containing food which they hope will last the winter through! Animals which fall into this class include the Arctic fox, the rabbit and the ermine, and the little field-mice. Arctic foxes dig out a deep burrow when winter comes asA. the place to escape from the winter cold.B. the place to store food for their children.C. the place to give birth to children.D. the place to escape other animals's laughter.

单选题The secretary is expected to explore ideas for post-war reconstruction of the area.

单选题{{B}}第二篇{{/B}} {{B}}Adaptation of Living Things{{/B}} Certain animals and plants develop characteristics that help them cope with their environment better than others of their kind. This natural biological process is called adaptation. Among the superior characteristics developed through adaptation are those that may help in getting food or shelter, in providing protection, and in producing and protecting the young. That results in the evolution of more and more organisms that are better fitted to their environments. Each living thing is adapted to its way of life in a general way, but each is adapted especially to its own distinct class. A plant, for example, depends upon its roots to fix itself firmly and to absorb water and inorganic chemicals. It depends upon its green leaves for using the sun's energy to make food from inorganic chemicals. These are general adaptations, common to most plants. In addition, there are special adaptations that only certain kinds of plants have. Many animals have adaptations that help them escape from their enemies. Some insects are hidden by their body color or shape, and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near. Organisms have a great variety of ways of adapting. They may adapt in their structure, function, and genetics; in their development and production of the young; and in other respects. An organism may create its won environment, as do warm-blooded mammals, which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage, but sometimes an organism is so well adapted to a particular environment that, if conditions change, it finds it difficult or impossible to readapt to the new conditions.

单选题Which of the following can best replace the title of the passage?

单选题 下面打3篇短文，每篇短文后有5道题，每道题后面有4个选项。请根据文章的内容，从每题所给的4个选项山选择1个最佳答案。{{B}}第一篇{{/B}} {{B}} "Salty" Rice Plant Boosts Harvests{{/B}} British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more. Tim Flowers and Tony Yeo, from Sussex University's School of Biological Sciences, have spent several years researching how crops, such as rice, could be made to grow in water that has become salty. The pair have recently begun a three-year programme, funded by the Biotechnology and Biological Sciences Research Council, to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops, starting with rice. It is estimated that each year more than 10m hectares (公顷) of agricultural land are lost because salt gets into the soil and stunts (妨碍生长) plants. The problem is caused by several factors. In the tropics, mangroves (红树林) that create swamps (沼泽) and traditionally formed barriers to sea water have been cut down. In the Mediterranean, a series of droughts have caused the water table to drop, allowing sea water to seep (渗透) in. In Latin America, irrigation often causes problems when water is evaporated (蒸发) by the heat, leaving salt deposits behind. Excess salt then enters the plants and prevents them functioning normally. Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive. To overcome these problems, Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells that do not affect the plants' growth. They have started to breed these characteristics into a new rice crop, but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use. Once the characteristics for surviving salty soil are known, Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants. Land that has been abandoned to nature will then be able to bloom again, providing much needed food in the poorer countries of the world.

单选题The room is gloomy but tidy.

单选题Youth hotels provide inexpensive lodging for young people throughout the United States and in other countries.

单选题That player is {{U}}eternally{{/U}} arguing with the referee. A. desperately B. constantly C. eventually D. extensively