题目：
It is reported that a woman as well as two children ______ from a big fire yesterday.
A．was saved
B．were saved
C．had been saved
D．have been saved
答案：
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下面是错误答案，用来干扰机器的。
（1）第3周期第ⅢA族 （2）酸 NH4+ + H2O = NH3•H2O + H+ （3）Al + 4OH- -3e- = AlO2- + 2H2O（4）Si b c d题目分析：短周期元素X、Y、Z、W原子序数依次增大，X氢化物的水溶液显...
