单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now listen to the conversation.
How was the weight used

A．To check the accuracy of scales.
B．To calculate the density of other metals.
C．To observe changes in the atmosphere.
D．To measure amounts of rainfall.

<上一题目录下一题>

热门试题

单项选择题

Communication with the Palestinian Authority would stop until ______.

A．the new Palestinian President was sworn-in
B．hours before the new President was sworn-in
C．Israeli Prime Minister makes new orders
D．the new Palestinian President controls militants and halts attacks

单项选择题

Why didn’t Professor Foley talk with Jean after class

A．He did not see her.
B．He was busy answering his students’ questions.
C．He was receiving an award.
D．He was collecting signatures from three other faculty members.

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. How was the weight used 您的浏览器不支持 audio 元素。

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now listen to the conversation.
How was the weight used