To understand the grammar of the sentence,you must break it into parts. A.down B.up C.off D.out 答案:A 提示:break up 指“驱散,打碎,分解,分裂 常为化学变化;break out 突然发生,爆发;break off 意为“打断,断绝,暂停工作,突然停止讲话 ;break down指“破裂,坍塌,垮下来,镇压,分解 .常指物理变化.根据语境,A适合. 【查看更多】
题目列表(包括答案和解析)
____ the temperature might drop, coal was prepared for warming.