单选题What does the woman mean?

单选题 Text While people around the world are talking about the prevention and treatment of AIDS, let's not (26) that we have had an old enemy, cancer, which (27) sounds horrible, but also, (28) to many ordinary people, appears invincible (不可战胜的). There (29) now both good news and bad news. The good news is that scientists (30) believe, based on the recent advances of modem medicine, (31) it is possible to tame cancer in the next decade, transforming it from a scary disease to something (32) a chronic (慢性的) disease, like diabetes. (33) no one expects a cure for cancer in the near future, but many think that the hi-tech may finally (34) more effective treatment, making the issue much (35) The (36) news is, (37) , about the current (38) Cancer rates are expected to increase at an alarming rate globally, (39) the most recent data from the World Health Organization. In 2000, 6 million people worldwide died from cancer. A sharp increase in new cases is predicted, (40) from 10 million new cases worldwide in 2000 to 15 million in 2020. In China, (41) 20 percent of all deaths are (42) to cancer, some 2 million people developed a malignant tumor (恶性肿瘤) in 2000, (43) one fifth of the world's total. (44) those people, 1.5 million have died, accounting for one quarter of the global mortality. There is no doubt that cancer has become a (45) killer of mankind.

单选题From the text, we can infer that

单选题{{I}}Questions 22～25 are based on the following dialogue.{{/I}}

单选题Which one of the following is not true?

单选题From the passage, we can infer that the economic situation in the U. S in 1983 was ______.

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单选题[此试题无题干]

单选题WhowasMissRichards?A.Achemistryteacher.B.Ascienceteacher.C.Anartteacher.D.Aphysicsteacher.

单选题Whydidthescientistsworksohardatmappingthehumangenome?A.Becausethehumangenomecandestroymanyillnesses.B.Becausethehumangenome'scompletioncanhelptogetridofmanydiseases.C.Becausetheywantedtobebetterknownthanothers.D.BecausetheHumanGenomeProjectcanprovidealotofchancesofwork.

单选题--Professor Brown looks sad today.--He is sad. Yesterday a fire broke out in his house and his dog got ______. [A] burning [B] to burn [C] burnt [D] to be burnt

单选题There is evidence that the usual variety of high blood pressure is, in part, a family disease. Since families have similar genes as well as similar environment, family diseases could be due to shared genetic influences, to shared environmental factors, or to both. For some years, the role of one"s environmental factor commonly shared by families, namely, dietary salt, has been studied at Brookhaven National Laboratory. These studies suggest that chronic excess salt ingestion can lead to high blood pressure in man and animals. Some individuals, however, and some rats consume large amounts of salt without developing high blood pressure. No matter how strictly all environmental factors were controlled in these experiments, some salt-fed animals never develop hypertension whereas a few rapidly developed very severe hypertension followed by early death. These marked variations were interpreted to result from differences in genetic constitution. By mating in successive generations only those animals that failed to develop hypertension from salt ingestion, a resistant strain (the "R" strain) has been evolved in which consumption of large quantities of salt fails to influence the blood pressure significantly. In contrast, by mating only animals that quickly develop hypertension from salt, a sensitive strain ("S" strain) has also been developed. The availability of these two strains permits investigations not heretofore possible. They provide a plausible laboratory model on which to investigate some clinical aspects of the human proto-types of hypertension. More important, there might be the possibility of developing methods by which genetic susceptibility of human beings to high blood pressure can be defined without waiting for its appearance.

单选题Alan Holman

单选题Daniel and Skip, who saved the lives of the two children, ______.