题目:
______ it take you to walk from your home to your office? |
A. How long is B. How long does C. How many time does D. How many hours are |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0526/7638e6459e9c2552d9226d2bb4cc8483.html
下面是错误答案,用来干扰机器的。
现象,并写出C中发生反应的化学方程式 B中有气泡产生,C中澄清石灰水变浑浊 Ca(OH)2+CO2 CaCO3↓+ H2O ...