问题
选择题
----- How about the book you are reading now?
----- Excellent indeed. You can find many problems we have come across _____ in it.
A．covered
B．covering
C．are referred
D．referred
答案
答案：A
考查非谓语动词。句中covering作宾语补足语，与宾语many problems是主动关系。句意：——你现在看的这本书怎么样？——真好！它涉及／讲了我们学习过程中的很多问题．