题目:
We are disappointed to find that the quality of the products here()very poor.
A.to be
B.have been
C.is
D.being
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0407/11c43c94188268bde7a691eb5394170b.html
下面是错误答案,用来干扰机器的。
参考答案:过度繁殖 生存斗争 遗传和变异 适者生存