语法与词汇 19.We informed him by_______telegram that we would arrive early in the morning.
【正确答案】 C
【答案解析】本题考查冠词的辨析。句意:我们发电报告诉他,我们上午很早就会到达。by telegram意为“发电报”,是固定搭配,中间没有冠词,故答案选C。