A: Tilly Smith is amazing! I wouldn’t know what to do during a natural disaster.

B: Knowledge is very important, but nowadays we can depend on technology, too. For example, a new app, Safety Net, can warn you about natural disasters.

A: How does it work?

B: It shows you a world map with all the active disasters flagged. You can choose your area and it will warn you about the upcoming disasters. It can also tell you how serious it might be.

A: That’s good. What’s more about it?

B: Well, the app also gives you advice on staying safe. It tells you the safe place to go and ways to save yourself from danger.

A: Very useful! How many disasters can it warn you of?

B: It can give warnings about 18 disasters, like floods, wildfires, tsunamis and earthquakes. However, the warning time for earthquakes is very short—just seconds.

A: That could still save lives!

参考答案

1 world map   2 choose  3 serious  4 safe   5 save    6 floods   7 earthquakes