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 may planets are there in the solar system revolving around the sun

【参考答案】

Nine

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判断题

Water is as important as vitamins, minerals and proteins for life.

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 may planets are there in the solar system revolving around the sun 您的浏览器不支持 audio 元素。