单项选择题

How can sharks find their quarries

A．By good sense of water waves made by quarries.
B．By good sense of smell and electrical magnetic power.
C．By good sense of light.
D．By good sense of bloo

<上一题目录下一题>

热门试题

单项选择题

Why sharks are useful for humans.*

A. Their tasty meat.
B. The principle of their defense system against disease.
G. Their solid skin.
D. The principle of their birth modes.

单项选择题

How can the satellites catch the information about the soil

A．By turning the intensity of sunshine into maps.
B．By analyzing the recent weather report.
C．By capturing the microwave radiation from the soil.
D．By analyzing information provided by ground observation centers.