问题
选择题
You _______ an A on your term paper, but you quoted a little bit more from others' papers.
A．should receive
B．could have received
C．would receive
D．must have received
答案
答案：B
根据句意：你的期末论文，本可以得A的，但你引荐别人的言论有些多了。根据but的转折可知，you并没有得A，这个动作是you本可以做而没有做的，由此可知应该选择B；A、C选项都是现在动作，与句意不符；D选项表示“过去一定做了某事”，与句意不符。