赫胥黎原著译本与严复译本大致对应的段落（   ）

以今日之见。严复译文

被子植物的有性生殖过程包括开花、____、____及____的形成．

在干旱地区发展绿洲农业，最先要考虑的因素是（    ）

A

    A bus comes to the bus stop．An old man gets on it．There's no seat for him．"The boy will give his seat to you．"the bus driver says to the old man．But the boy in the seat doesn't stand up．The bus driver looks at the boy,then he says to the old man again in a high voice(声音)，"The boy will be happy to give you his seat．"This time the boy hears it．His face turns red．He gets up at once．The old man sits down and says to the boy,"Thank you,my boy．"

根据钠原子结构示意图，判断下列说法错误的是(    )