杯水车____
杯弓蛇____
冰____玉洁
____驾齐驱
不共____天
沧海一____
右图装置的玻璃槽中是蒸馏水,半透膜允许单糖透过。倒置的长颈漏斗中先加入蔗糖溶液,一定时间后再加入蔗糖酶。最可能的实验现象是 ( )
It ____ him one hour ____ ____ his homework.