题目

—How do you like the environment? —Wonderful! of the land covered with trees and grass. A . Two fifths; is B . Two fifth; is C . Two fifths; are D . Two fifth; are 答案：A3．下列现象中与大气压无关的是（　　）A．把药液注射进肌肉里B．用手帕掉衣服上的灰尘C．用打气筒给车胎打气D．用抽水机抽水