单项选择题

Which statement do the researchers think is wrong

A．They know how a tumor is developed.
B．They know how a new tumor is seeded in the body.
C．They know how the female hormone estrogen makes breast cancer cells grow.
D．They know breast cancer is a death sentence to women.

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热门试题

单项选择题

What data can the handheld computers NOT record

A．The direction in which an animal is moving.
B．The black market value of an animal’s skin.
C．Fluctuations in water levels.
D．The apparent state of an animal’s health.

单项选择题

Which of the following statements does the passage support

A．The new scheme will eliminate the poaching in national parks.
B．Bushmen are too poorly educated to use modern technology.
C．Use of the CyberTracker will help to preserve rare animals.
D．The new system has doomed the kudu population.