填空题 Directions: In this section, you will hear a talk. Answer" the questions below. You will hear the recording twice. At the end of the talk there will be a 3-minute pause, during which time you are asked to write down your answers briefly on the Answer Sheet.

填空题 Besides heat, what else terrible natural events can kill thousands of people every year?

填空题 Health experts say that the "heat" may be ______, when people generally hear little about that ?

填空题 Doctors say wear loose ______ clothes made of natural materials, can protect yourselves from the dangers of extreme heat.

填空题 Several of these conditions together can raise a person's body temperature above ______.

填空题 What can we do to help the pain disappear after the body again has the right amounts of water and salt?