4.
A. Mainly students.
B. Mainly professors.
C. Mainly students.University alumni and professors.
D. Professors and students.
Passage2:Questions 5 to 8 are based on the passages you have just heard.5.
A. Snow can cause thousands of deaths in the United States every year.
B. Snow can be very dangerous although it is beautiful.
C. Snow can lead to many people’s heart attack in the United States.
D. Snow can make it more difficult to do physical activity in winter.
6.
Avoid living in areas where it snows often.
B. Stay inside the house until the winter ends.
C. Do physical activity by removing the snow around the house.
D. Keep sufficient supplies in the home before the snow storm.
7.
A. Turn off the engine to save fuel for emergency.
B. Shut the vehicle windows to keep it warm inside waiting for rescue.
C. Put a bright-colored object on top of the vehicle asking for help.
D. Clear the exhaust pipe every ten or fifteen minutes.
8.
A. Food, medicine and clothing.
B. Food, medicine and clean water.
Clothing, clean water and extra power supplies.
D. Medicine, clean water and clothing.
微信支付 
支付宝支付