更多"Many AIDS experts are not completel"的相关试题:
[单项选择]Many AIDS experts are not completely satisfied with results of the study because
A. only a limited number of chimpanzees are used for sampling the virus.
B. it is now extremely difficult to find chimpanzees that carry the virus.
C. the samples collected are from two different subspecies of chimpanzees.
D. it does not provide reliable evidence of the link between SIV and HIV-1.
[单项选择]Many experts hold that the forthcoming decline of polar bears is______.
A. directly caused by the diminishing Arctic ice
B. directly caused by the atmospheric buildup of heat-trapping gases
C. a symbol of the weather change
D. absolutely based on the emission of heat-trapping gases
[单项选择]Although many experts agree that more children are overweight, there is debate over the best ways to ______ the problem.
A. relate
B. tackle
C. file
D. attach
[单项选择]AIDS
A. 库蚊，按蚊
B. 雄性按蚊
C. 雌性按蚊
D. 螨虫
E. 血液体液传播
[单项选择]In English many nouns can be turned into verbs without any change to their form. For instance, the noun walk can be turned into the verb to walk. This phenomenon is known as ______ in morphology.
A. compounding
B. derivation
C. conversion
D. inflection
[单项选择] Many experts remain (skeptical) about his claims.
A. doubtful
B. untouched
C. certain
D. silent
[单项选择]Many experts feel______.
A. carbon-dioxide emissions should be limited
B. measures should be taken to prevent carbon-dioxide emissions
C. carbon-intensive energy technologies should be developed
D. there is no need to hurry [o do something about carbon-dioxide emissions
[单项选择]______ no conclusive evidence exists, many experts believe that the wheel was invented only once and then diffused to the rest of the world.
A. Even
B. But
C. Although
D. So
