单项选择题

Questions 19 to 21 are based on the passage you have just heard.

A. As early as man came into being.
B. In the 18th century.
C. After 1946.
D. In 1946.

<上一题目录下一题>

热门试题

单项选择题

单项选择题

Questions 19 to 21 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。