单项选择题


O’Leary’s program is different from other similar software in that

A．it is inexpensive.
B．it is more user-friendly.
C．it uses more math.
D．it is available all over the world.
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单项选择题
On the safety issue of mobile phones， the manufacturing companies
A．deny the existence of mobile phone radiation.
B．develop new technology to reduce mobile phone radiation.
C．hold that the amount of radiation is too small to worry about.
D．try to prove that mobile phones are not harmful to health.
单项选择题
It can be inferred from the last paragraph that taste acuity is
A．identified with certain chemicals.
B．developed over time after birth.
C．related to one’s eye and hair color.
D．genetically determined.
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