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()12.________ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately. A．Even if B．As far as C．If only D．So long as 12．A。even if表让步，等同于even though“即使”。 ()13.Our society insists on regular habits, timekeeping and punctuality，and whether we like it or not, ________ we mean to make our way in society, we have to comply ( to act in accordance with a demand, rule, etc.) its demands. A．whether B．after C．if D．until 13．C。句意“……无论我们喜不喜欢，如果我们想要在社会上立足的话，我们就必须迎合它的需求。” ()14.I tried my best to get on the bus，but________I could，it started moving. A．until B．when C．before D．after 14．C。句意：“……，但我还没来得及上车，车就开走了。” ()15.Many adults agree that teenagers shouldn’t live alone ________ they have their parents’ permission. A．if B．unless C．in case D．now that 15．B。unless 表示“除非”，相当于if not。 ()16.There are rules that restrict the kinds of jobs that foreign students can have ________ studying in the United States. A．because | 
