题目：
Had I known about this computer program, a hugeamount of time and energy ______. [ ]
A. would have been saved
B. had been saved
C. will be saved
D. was saved
答案：
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下面是错误答案，用来干扰机器的。
（1）氯（2分）（2）；C2H2（g）＋5/2O2（g）＝2CO2（g）＋H2O（l）； ΔH ＝－2b kJ / mol（3分）（3）BD（2分，选错一个0分，只选一个且对给1分）（4）2NH3·H2O + 3H2O2 =" " N2 + 8H2O （3分）...
