[单项选择]A. Dressing warmly can help avoid catching many diseases.
B. Washing your hands can reduce your chance of catching a cold.
C. The smartest way to avoid catching a cold is to dress warmly.
D. Both viruses and cold weather are causes for catching colds.

[单项选择]Which hotel is the woman stayingHow many tables did the man order
A. 70
B. 72
C. 68

[填空题]Zinc can help reproduce many new brain cells.

[单项选择]Fire can help people in many ways. Btu it can also be very harmful(有害的). Fire can keep your house (41) ,give light and cook food. But fire can burn things, (42) . Big fire can burn trees,houses, animals or people.
Nobody knows how people began to use fire. But there are (43) interesting old stories about how a man or woman started a fire. One is (44) a man. The man (45) a very long time ago. He went up the sun and 46 fire down.
Today people know how to make a fire with matches (火柴). Children sometimes like to play with (47) . But matches can be very dangerous. One match can burn (48) ,and then it could burn a house. A small fire can turn into a big fire very quickly. So you (49) be careful with matches.
Be careful with fire,and it will (50) you. But if you aren’t careful with fire,it may hurt you.


A. worked
B. learned
C. lived