A:Are you all right?
B:I don't think I am.
C:You can't be serious.
D:It doesn't matter.
【示例】一山一水,优雅了情趣,于是,所有的情致在山谷间流成一汪清泉,碧透灵动,不染尘世半粒尘埃。
对下列各图所表示的生物学意义的描述,正确的是