【单选题】_____ of them knew about the plan because it was secret.
【简答题】体细胞胚发生的途径可分为()和直接途径。
【简答题】能耗查询管理指各种能耗数据通过( ) 图表、相应的能耗信息管理系统进行按需进行查询。
【单选题】It is because English is useful ___.
【单选题】We didn't know _____, so we gave it to the police. [ ]
【单选题】We don't need air conditioning, ________.
D.
neither we can afford it
【简答题】数组是一系列相关数据的集合,数组中的每一个数据称为一个元素,每个元素包括下标和值两部分。根据下标的类型不同,数组可以分为_________数组和_________数组。其中前者的下标是从0开始的数字,后者的下标可以是数字也可以是字符串。
【单选题】None of them knew what had happened _________ I told them about it.