— What did he _______ just now?— Sorry, I didn't catch his words. I_______ about something else.
A：speak; am thinking
B：talk; thought
C：say; was thinking
D：tell; have thought
太阳直射最北、最南的界线是（ ）
某人不小心手被刀割伤，流血一直不易被止住．他可能是血液中什么成分缺少？（ ）
王师傅用一个平底锅烙饼，锅里一次最多放2个饼，两面都要烙，烙一面需3分钟，烙三张饼至少需（ ）分钟．
