题目

-Hi, Wang Ling, can't you recognize me? -Oh, Ma Yan!I ________ you ________ your sister. It's so nice to meet you here! A. thought; were       B. thought; are     C. think; are      D. think; were 答案：A 解析: 刚才以为...... 应该用过去时。如图所示的四幅图中，利用的物理原理与其它三个不同的是               A．热气球B．直升飞机C．飞艇D．轮船