Why did the woman make overhead copies of the slides？
A. She was very nervous about going first.
B. She was afraid that the computer program would fail.
C. She took the man's advice about making them.
D. She wanted to show them to the man.
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What does the professor mean when he says this:
A. He plans to give others an opportunity to speak.
B. He is talking too fast and intends to slow down.
C. He needs to correct something that he has said.
D. He wants to talk about that subject later.
How is it possible to recognize an object when only part of it is visible？
A. The brain recognizes symmetry and visualizes the whole.
B. The object is often familiar enough to be recognized.
C. The pieces are large even though some are missing.
D. The principles for identification can be learned,
Which of the sentences below best expresses the essential information in the highlighted sentence in the passage？ Incorrect choices change the meaning in important ways or leave out essential information.
At the time, the U.S. was struggling against many other nations to gain control of western lands.
B. The American government encouraged all people, regardless of their background, to settle in western regions.
C. Mexico, England, and the Native Americans all fought with America for the rights to the western territories.
D. U.S. authorities supported westward migration as it kept other peoples from taking over the land there.
According to Paragraph 3, how did Southern plantations cause people to move west？
A. By teaching them the skills they needed to start their own farms.
By promising to supply them with agricultural produce for their journey.
C. By building factories that destroyed people's farmland.
D. By severely limiting economic opportunities for small-scale farmers.
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