单项选择题
A．increases the ability to think B．is the best time for thinking C．is better for thinking than is very warm weather D．decreases the ability to think
A. What time B. May I have your name C. It seems like you D. I’m glad E. How about F. May I help you G. Thanks for calling H. Would you like to
A．New Yorkers are usually open with strangers. B．People from the South are usually considered good hosts. C．The friendliest Americans travel from place to place. D．Different parts have different customs and habits.