(单选题)
What does the "it" in the second paragraph refer to?
A.The linguistic rules
B.Thinking of exceptions.
C.Sending to do something useful
D.Learning linguistic rules.
参考答案:A
参考解析:
细节理解题。根据第二段第二句“First, it astonishes us that there are rules that we didn’t know that we knew.”可知it为形式主语,真正主语为这些我们不知道我们自己知道的规则。故选A。
知识点:
