【简答题】The Beijing Underground’s Line Ten will soon have 40 “reverse vending machines(有偿自动回收机)”,which will pay people for their empty plastic bottles. “We have placed two such machines at Beijing Capital Int...
【简答题】With fears of a possible nuclear meltdown(核反应堆堆芯的熔毁) in Japan building up, evidence has come to light that the nation received warnings over the stability of its power plants from an international wat...
【单选题】C Every year landslides (滑坡) cause 25 t0 50 deaths and $1. 5 billion in damage in the UnitedStates. They account for 15 percent of the deaths from natural disasters in Europe. And in Decem-ber, a sing...