题目内容

The second paragraph talks about

A. the results and method of the experiment
B. the purpose and the indication of the experiment
C. the influence and the process of the experiment
D. both A and B

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The experts of epidemiology are trying more precise molecular trying techniques so as to distinguish resistant strains.

A. Right
B. Wrong
C. Not mentioned

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It is of vital importance to concentrate prevention efforts on minimizing person-to-person

A. Right
B. Wrong
C. Not mentioned

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Using specific radio-labeled DNA probes provides epidemiologists unprecedented resolving power for identifying reservoir and transition routes of genes and pathogens.

A. Right
B. Wrong
C. Not mentioned

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Which of the following is NOT true about natural selection？

A. Natural selection favors adoptions that help a species to survive.
B. Natural selection works against extreme changes in a species.
C. Natural selection allows helpful new traits to spread through a population.
D. Natural selection occurs in periods of severe environmental disturbances.

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The second paragraph talks about

A. the results and method of the experiment B. the purpose and the indication of the experiment C. the influence and the process of the experiment D. both A and B

The experts of epidemiology are trying more precise molecular trying techniques so as to distinguish resistant strains.

It is of vital importance to concentrate prevention efforts on minimizing person-to-person

Using specific radio-labeled DNA probes provides epidemiologists unprecedented resolving power for identifying reservoir and transition routes of genes and pathogens.

Which of the following is NOT true about natural selection？

A. the results and method of the experiment
B. the purpose and the indication of the experiment
C. the influence and the process of the experiment
D. both A and B