Why does the professor say this:
A．He is showing the students some slides.
B．He does not want the students to ask questions.
C．He wants the students to pay attention.
D．He thinks that the information is very clear.

What is the lecture mainly about？
A．Provisions of the Homestead Act
B．How to construct a log cabin
C．Frontier homes in the West
D．Early construction materials

As the author suggests, what should the applicant know before the interview？
A．The type of work and his career expectation.
B．His career objective a particular company will decide.
C．The reasons a particular company has to employ him.
D．All of the above.

A．It was cold.
B．It was a failure.
C．I'm very happy.
D．She is shy enough.

Which two characteristics are common in bacteria？ Click on 2 answer choices.
A．They have one cell.
B．They are harmful to humans.
C．They reproduce quickly.
D．They die when exposed to air.

听力原文：We're going to look around the city tomorrow morning.
4
A．I'll try my best to do it.
B．I'm looking forward to that.
C．I feel a little cold in the morning.
D．I haven't eaten my breakfast yet.