取定量的温水加入储水筒内快速融化雪或雹,用量雨杯量出总水量,再()的温水量,也可得到降雪或降雹的降水量。
A、减去
B、加入
C、减去加入
参考答案:C
Some people would like to do shopping on Sundays since they expect to pick up
wonderful ____ in the market. [ ]
A. batteries
B. baskets
C. barrels
D. bargains
影响人口性别构成的因素。