杯子装满了冷水一会儿后,杯外会有水珠,是什么原因?
参考答案:因为空气中的水分凝结在杯面。
从1,2,3,4,5,6,7,8,9这九个数中任意抽取一个数,那么取到素数的概率是______.
—If there are _____ people driving, there will be ____ air pollution.
— Yes , the air around us will be fresher and cleaner.
A.fewer; less
B.less; fewer
C.fewer; fewer
D.less; less