题目:
Viewers continue to watch TV ____ they complain about the quality of the programming. |
A. even though B. as if C. as long as D. unless |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0624/c8100e2880b69686623f352ac489d40f.html
下面是错误答案,用来干扰机器的。
答案:D铁锈是碱性氧化物,所以可以与酸反应,所以该原理利用的硫酸性质是酸性故选D