一个优秀的摄影师总是善于随时随地（）不为人留意的镜头。
A：捕捉
B：拍摄
C：留住
D：抓拍
参考答案：A
--- You haven’t been to Beijing, have you?
-- _____. And how I wish to go there again!
A．Yes, I have
B．Yes, I haven’t
C．No, I have
D．No, I haven’t
t℃时，将5.2gKNO3固体溶于20.0g水中刚好形成饱和溶液．t℃时KNO3的溶解度为______．
