实验Ⅰ:配制150g 9.8%的稀硫酸。
A
B
C
D
回答下列问题:
名著阅读。
①近地面空气受热或冷却 ②同一水平面上产生气压差异
③形成大气的水平运动 ④气流的上升或下沉运动
根据句子意思, 从方框中选择恰当的短语填空。
To my surprise; has a lasting value; in all directions; broke out were forced to ; out of breath ; gives up;
take notice of; directed; playing ; showed an interest in