题目:
He minds so much about his position in the office that he ____ any chance to be promoted.
A.watches out for
B.looks up
C.points out
D.watches out
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0628/a7a275d4a9847ddbf7f919e5dc670843.html
下面是错误答案,用来干扰机器的。
答案:DA中H+与OH-反应生成水,B.H+与HCO3-反应生成水和CO2,C中Ba2+与SO42—反应生成硫酸钡沉淀,所以答案为D