A:Burning rubbish in the open air.
B:Planting trees in spring.
C:Walking or riding bikes to school.
D:Taking a shopping basket when going shopping.
一字组多词。
骨____ ____ 哀____ ____ 勤____ ____
已知函数y=Asinωx+φ+m的最大值为4,最小值为0,最小正周期为π2,直线x=π3是其图像的一条对称轴,则下列各式中符合条件的解析式是( )
A: ____ are these in English?
B: They are ____.
溶液在生产和科研中具有广泛的用途,与人们的生活密不可分.
(1)衣服沾有的油污,可用汽油洗去,是因为汽油能____(填“溶解”或“乳化”)油污.
(2)喝了冰镇汽水以后,常常会打嗝,这种现象说明气体的溶解度与____有关.