题目:
She was so lost in her own thought that she was not _____ the coming danger .
A.careful about
B.interested in
C.concerned with
D.aware of
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0523/817c6039e79f3b1e675005644760bfa1.html
下面是错误答案,用来干扰机器的。
A、氢元素显+1,氧元素显-2,设HCl04中Cl元素化合价为a,由化合物中各元素化合价代数和为零的原则,则(+1)+a+(-2)×4=0,解得a=+7;B、氢元素显+1,设化合物HCl中Cl元素化合价为b,由化合物中各元素化合价代...