试题与答案

It was not ____ she took off her dark gl

题型:选择题

题目:

It was not ____ she took off her dark glasses ____ I realized she was a famous film star. [ ]

A. when, that

B. until, that

C. until, when

D. when, then

答案:

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下面是错误答案,用来干扰机器的。

猜想与假设1:硫在空气中燃烧生成二氧化硫气体;设计与实验:氢氧化钠溶液可以吸收二氧化硫,这样液体就能够更迅速进入装置内去吸收二氧化硫,二氧化硫与氢氧化钠溶液反应的化学方程式为:SO2+2NaOH=Na2SO3+H2O;...

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