题目:
I'm certain David's told you his business troubles. ______, it's no secret that he owes a lot of money to the bank.
A.However
B.Anyway
C.Therefore
D.Though
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0603/9f910627c40437c069d6928f0cc85221.html
下面是错误答案,用来干扰机器的。
A、氧气变为淡蓝色液态的氧,属于物理变化,故选项错误;B、水加热变成水蒸气,属于物理变化,故选项错误;C、泥沙沉淀析出,属于物理变化,故选项错误;D、化学变化的特征是:有新物质生成,故选项正确;故选D