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举一反三
【单选题】对于蛙、蝾螈等两栖动物的“两栖”，我们可以理解为[ ]
A.
皮肤裸露有花纹的动物
B.
成体既可以在水中生活，也可以在陆地上生活
C.
幼体在水中发育，成体营水陆两栖
D.
具有变态发育的动物
【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.
【单选题】恶性蝾螈瘤是指（）。
A.
伴有软骨分化的恶性周围神经鞘膜瘤
B.
伴有腺样分化的恶性周围神经鞘膜瘤
C.
伴有横纹肌肉瘤分化的恶性周围神经鞘膜瘤
D.
伴有神经内分泌分化的恶性周围神经鞘膜瘤
E.
伴有血管肉瘤分化的恶性周围神经鞘膜瘤