What is the award given by the people who have good suggestions？
A．To have a month holiday
B．To have an extra month's pay
C．To get a higher position in the company
D．To get another two months' pay

Why are bacteria being used in the research study at the university？
A．Bacteria have unusual cell formations.
B．Bacteria live harmlessly on the skin.
C．Bacteria are similar to other life forms.
D．Bacteria cause many diseases in humans.

How many percent of the people would be in favor of a shorter coffee-break and finishing earlier？
A．25%
B．30%
C．50%
D．55%

Why does a rock avalanche move faster than other types of rockslides？
A．The rock moves over a layer of compressed air.
B．The rainfall is heavy where avalanches occur.
C．The rock breaks apart as it moves downslope.
D．The angle of the slope is almost vertical.

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

Which sentence below best expresses the essential information in the highlighted sentence in paragraph 5？ Incorrect choices change the meaning in important ways or leave out essential information.
A．Fire has destroyed much of the original vegetation, so mudflows are now more likely.
B．More damage to vegetation is caused by brush fires than by any other natural event.
C．It is necessary to remove dead and damaged vegetation after a mudflow but not after a fire.
D．Fires occur frequently in areas where the vegetation has been cleared for development.