—What are these?   —_______

试题详情及答案解析: —What are these? —________.
A．There are books.
B. They’re books.
C. It’s a book.; 答案：B; 试题分析：句意：-这些是什么？-它们是书籍。疑问句中用these作主语时，回答要用they来代替。所以选B。
考点：考查特殊疑问句的回答。