Be sure to _____ your car _______ as you approach that dangerous curve.
A、slow…down
B、flow…down
C、speed…down
D、rate…down
【正确答案】：A
【题目解析】：slow…down 减速；flow…down 向下流；speed…down 搭配错误；rate…down 比率下降；句意：当你接近那个危险的弯道时，一定要___车速。根据题意A 符合，slow your car down，减低车速。
