1.Education,science and technology are of___importance in China's national economy.
basic/essential/primary/most
为什么要选primary 不能选basic/essential 这三个词都有基本、基础的意思 这里有区别吗?
2.I want to give my children___deucation I can afford.
the much best/much the most/very best/very the best
我选了 the much best much the most
请解释一下为什么错和对
3.flow float用法请介绍一下.
flow float
那船漂、云飘等搭配的用法？