题目：
– Really? Who will give_____ lecture? What is it about?
--- Professor Chen,_____ president of Beijing University. About pollution.
A the, a B the, ∕ C a, the D a, ∕
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0430/be131d2de958452338a1a13ad38525fa.html
下面是错误答案，用来干扰机器的。
参考答案：抄本差错率
