单选题：________ many times, but he still couldn't understand it.

题目内容：

________ many times, but he still couldn't understand it. A．Having been told
B．He was told
C．Though he had been told
D．Having told

参考答案：

答案解析：

You know that's right, ________ ?

You know that's right, ________ ?A．is it B．isn't it C．do you D．don't you

分类：英语题型：单选题

More students than one ________ there.A．has been B．have been C．had been D．would

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分类：英语题型：单选题

若向量a=(1，2)，b=(-3，4)，则(a•b)(a+b)等于( )A．20 B．(-10，30) C．54 D．(-8，24)

分类：英语题型：单选题

下列各组词语中，字形、词义解释全都正确的一项是（　　）A．荣膺众望所归(众人所敬仰的) 瞻顾韦编三绝(读书刻苦勤奋) B．端倪(事情的眉目)高山流水(路途艰险难

分类：英语题型：单选题