题目

1No one has yet succeeded in explaining the
___ of how life began.
A cause B problem C Puzzle D reason
2I've never heard such stories ___ Dad tells me.
A as B that C which D what

提问时间：2021-03-13

答案

C
A
第一题 选择 C PUZZLE 名词 难题或困惑
翻译过来就是 至今还没人成功的解释出生命的起源这一难题.
第二题选A such as 固定用法
例如...,象这种的