【单选题】The police started to make random checks of cars and trucks.
A.
The police began to make random inspections of cars and trucks.
B.
Random inspections of motor vehicles began to be made by the police.
【单选题】Who knows how _____ model cars? [ ]
【简答题】A) Make cars with automatic control . B) Make cars that have better brakes. C) Make cars that are less powerful. D) Make cars with higher standards.
【简答题】在电子商务环境中,企业业务活动中的信息流由直线型结构转化为一种______结构。
【单选题】—If people make small changes, like taking buses instead of driving cars, it will make a big difference. —_____. Then the traffic will be much better.
【单选题】—If people make small changes, like taking buses instead of driving cars, it will make a big difference. —_____. Then the traffic will be much better.