单选题Which of the following is true about Oregon's adoption record law?

单选题Annny: Do you still have a headache, Mike?Mike: Yes, I do. And now I have a fever and cough constantly.Annny:______

单选题The man denied ______ anything at the supermarket when he was questioned by the police.

单选题He postponed his trip. Here the word" postponed" means ______.

单选题—You were brave enough to raise objections at the meeting. —Well, now I regret( )that.

单选题Tom writes as ______ as her brother. A. clear B. more clear C. clearly D. most clearly

单选题Daughter (in the kitchen): Shall I turn on the burner?Mother: ______. I haven't finished peeling the potatoes.

单选题Walking down any of Shanghai"s main shopping streets this week, newcomers might think the locals have been celebrating Christmas for centuries. Christmas may not be a customary holiday in China, but businessmen in Shanghai know it will bring something more valuable than tradition: people willing to spend money. Most Chinese may feel little connection with the Christmas celebration, but with most shops offering discounts (折扣), the message couldn"t be clearer—it is the season to part with one"s hard-earned cash. Much of that marketing drive is directed towards the thousand of foreigners and foreign companies that call Shanghai home. But for Shanghai"s 13 million locals, regardless of personal interest, there seems no avoiding the season"s commercial (商业的) greetings. Along some major roads, nearly every shop window displays some symbols to the holiday: a man-made fir tree (杉树) with lights, or a snowman. With an increasing number of Westerners arriving in the city for work, young Shanghainese, eager to keep pace with the latest Western fashions, have begun to show their interest in Christmas. But some people still don"t think Christmas is an important festival in China. At least it is less important than the New Year and China"s Spring Festival.

单选题 Before 1965 many scientists pictured the circulation of the ocean's water mass as consisting of large, slow-moving currents, such as the Gulf Stream. That view, based on 100 years of observations made around the globe, produced only a rough approximation of the true circulation. But in the 1950's and the 1960's, researchers began to employ newly developed techniques and equipment, including subsurface floats that move with ocean currents and emit identification signals, and ocean current meters that record data for months at fixed locations in the ocean. These instruments disclosed an unexpected level of variability in the deep ocean. Rather than being characterized by smooth, large-scale currents that change seasonally (if at all), the seas are dominated by what oceanographers call mesoscale fields: fluctuating, energetic flows whose velocity can reach ten times the mean velocity of the major currents. Mesoscale phenomena—the oceanic analogue of weather systems—often extend to distances of 100 kilometers and persist for 100 days (weather systems generally extend about 1,000 kilometers and last 3 to 5 days in any given area). More than 90 percent of the kinetic energy of the entire ocean may be accounted for by mesoscale variability rather than by large scale currents. Mesoscale phenomena may, in fact, play a significant role in oceanic mixing, air-sea interactions, and occasional—but far-reaching—climatic events such as El Nino, the atmospheric-oceanic disturbance in the equatorial Pacific that affects global weather patterns. Unfortunately, it is not feasible to use conventional techniques to measure mesoscale fields. To measure them properly, monitoring equipment would have to be laid out on a grid at intervals of at most 50 kilometers, with sensors at each grid point lowered deep in the ocean and kept there for many months. Because using these techniques would be prohibitively expensive and time consuming, it was proposed in 1979 that tomography be adapted to measuring the physical properties of the ocean. In medical tomography X-rays map the human body's density variations (and hence internal organs); the information from the X-rays, transmitted through the body along many different paths, is recombined to form three-dimensional images of the body's interior. It is primarily that this multiplicative increase in data obtained from the multipath transmission of signals that accounts for oceanographers' attraction to tomography: it allows the measurement of vast areas with relatively few instruments. Researchers reasoned that low-frequency sound waves, because they are so well described mathematically and because even small perturbations in emitted sound waves can be detected, could be transmitted through the ocean over many different paths and that the properties of the ocean's interior—its temperature, salinity, density, and speed of currents—could be deduced on the basis of how the ocean altered the signals. Their initial trials were highly successful, and ocean acoustic tomography was born.

单选题The local authorities realized the need to make ______ for elderly people in their housing programmes. A. preparation B. requirement C. specification D. provision

单选题The reason for this note is that at the moment I haven't got that much spare time on my hands to thank you______.

单选题Mary's dress cost ______ Alice's.

单选题______ever so humble, there's no place like home.

单选题Some experts advised girls not to be_______by products promising to make you lose weight quickly. 

单选题In the time______ it is impossible for me to answer all the questions involved within this one question.

单选题______ all of us who are here tonight, I would like to thank Mr. Johnson for his informative talk.

单选题Another sensible piece of advice for motorists is to ______. ( )

单选题 Did you detect a touch of jaundice in her remark?

单选题 Which of the following imperative sentences indicates WARNING?