填空题

You will hear a talk. As you listen, you must answer questions 21—30 by writing NO MORE THAN THREE words in the space provided on the right: You will hear the talk TWICE.
How long have astronomers studied the planets and other objects in space

【参考答案】

Thousands of years

<上一题目录下一题>

热门试题

判断题

Warm water can’t cool us, but cold water can.

单项选择题

You will hear a talk. As you listen, you must answer questions 21—30 by writing NO MORE THAN THREE words in the space provided on the right: You will hear the talk TWICE. How long have astronomers studied the planets and other objects in space 您的浏览器不支持 audio 元素。