step by step 第二册 lesson 31

（单词翻译）

UNIT 36 NATURE( Ⅲ ) DISASTERS Lesson 71 Part Ⅰ

UNIT 36  NATURE(Ⅲ) DISASTERS

Lesson 71

Part Ⅰ  Warming-up Exercises

Spot Dictation: Fire

Fire can help people in many ____. But it can also be very ____. Fire can heat water, warm your ____, give light, and cook food. But ____can burn things too. It can ____trees, houses, animals, or people. Sometimes  ____fires can burn forests.

Nobody knows ____sure how people began to use  ____.But there are many interesting, old ____about the first time a man ____woman started a fire. One story ____Australia tells about a man a ____,very long time ago. He went ____to the sun by a rope ____brought fire down.

Today people know ____to make a fire with matches. ____sometimes like to play with them. ____matches can be very dangerous. One ____can burn a piece of paper, ____then it might burn a house. ____small fire can become a big ____very fast.

Fires kill many people ____year. So you must be careful ____matches. You should also learn to ____out fires. Fires need oxygen. Without ____they die. There is oxygen in ____air. Cover a fire with water, ____,or in an emergency, with your ____or a blanket. This keeps the ____away from a fire and kills ____.

Be careful with fire, and it ____help you. Be careless with fire, ____it might hurt you.

Score: ____

Lesson 71 Part Ⅱ ShortDialogues (for practice in drawinginferences)

Lesson 71

Part Ⅱ                    Short Dialogues

(for practice in drawing inferences)

Exercises:

Ⅰ.(Dialogue 1)

Ⅱ.(Dialogue 2)

What can you infer¹ from the woman's tone² about her character and temperament³?

Lesson 71 Part Ⅲ Earthquakes

Lesson 71

Part Ⅲ                       Earthquakes

Exercises:

Ⅰ.1.a.Frequently.

b. Seldom.

c. Regularly.

2.a.The one in Alaska.

b. The one in Alabama.

c. The one in San Francisco.

3.a.Because they can't be predicted.

b. Because they happen very often.

c. Because they kill more people than other disasters do.

4.a.A flood and storm.

b. A cyclone⁴ and tidal wave.

c .A typhoon.

Ⅱ.                                     Earthquake