Question

【题目】—.______? —They are flowers.

A. What’s this? B. What’s that?

C. What are these? D. Are they flowers?

Answer 1

【答案】C

【解析】

试题分析：句意：--这些是什么？--它们是花。因为答语的句子的主语是they，所以问句句子的主语必须是复数。故选C。