问题
选择题
Had I known about this computer program, a huge amount of time and energy _____. [ ]
A. would have been saved
B. had been saved
C. will be saved
D. was saved
答案
答案：A
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Had I known about this computer program, a huge amount of time and energy _____. [ ]
A. would have been saved
B. had been saved
C. will be saved
D. was saved
答案：A
，
。若混凝土基础和地下室占有的体积为3000m3。（计算结果取整）