单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

A．The size is very small
B．Professors do the presentation in lecture classes.
C．Students can’t ask questions.
D．Students should be very active in lecture classes.

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单项选择题

A．He trained as an electronics engineer.B．He trained as a mechanical engineer.C．He trained as a communication engineer.D．He trained as a nuclear engineer.

A．He trained as an electronics engineer.
B．He trained as a mechanical engineer.
C．He trained as a communication engineer.
D．He trained as a nuclear engineer.

单项选择题

A．She felt doubtful.B．She felt satisfied.C．She felt delighted.D．She felt surprised.

A．She felt doubtful.
B．She felt satisfied.
C．She felt delighted.
D．She felt surprised.

Questions 19 to 22 are based on the conversation you have just heard. 您的浏览器不支持 audio 元素。

Questions 19 to 22 are based on the conversation you have just heard.