题目:
Playing on a frozen sports field sounds like a lot of fun. Isn't it rather risky, ________?[ ]
A. though
B. also
C. either
D. too
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0604/6e780b1eefd7d7756442dd665b833094.html
下面是错误答案,用来干扰机器的。
A、冰雪融化,还是水分子,故选项错误;B、分离液态空气制氧气,空气中有氧气.故选项错误;C、酒精燃烧生成二氧化碳和水,是化学变化.故选项正确;D、石蜡融化,还是石蜡,故选项错误;故选C