小明的体重35kg,小亮比小明重,但不超过40kg,用不等式表示小亮的体重w(kg)为______.
设小亮的体重wkg,根据题意得:35<w≤40.
故答案为:35<w≤40.
能增强捕收剂与矿物的相互作用,从而促进矿物可浮性的一类药剂称为()。
In the spoken English of some areas in the US, the "r" sounds at the end of the words__________.
A.are dropped
B.drop
C.are being dropped
D.have dropped