1,A.主要考查对separate和divide意思的理解.separate侧重区别,区分.divide侧重于分开,分成几部分.其次是考查动词与介词的搭配,两点一起考虑,不难选择.
2,D.主要考查这里YES和NO的一个语境的问题.
Don't you know I make the decision here?
No,not until you have told me.
完整的回答是No,I don't know until you have told me.
翻译成:是的,直到你告诉我之前我不知道.
因为已经是告诉过了,对现在造成一个结果就是我知道了这么个事情,因此用完成时.