下载APP
举一反三
【单选题】Regeneration of Limbs Most people would agree that it would be wonderful if humans could regenerate limbs. Those who have lost their arms or legs would be complete again. The day is still far off when...
A.
Scientists have lately found that a lizard will grow a new tail if the old one is broken off.
B.
Regeneration is a process discovered centuries ago.
C.
How severe a wound is determines the strength of the current flowing around it.
D.
The lizard, unlike man, is a less-developed animal.