判断 正确的Weather forecasts help us to decide what to do.It help

判断 正确的
Weather forecasts help us to decide what to do.It helps us to decide where to go.It also helps us decide what to wear.It can also save lives.For example,forcasters can warn people when a hurricane or typhoon is coming.They can tell the direction of hurricane or typhoons.This helps people to move away from them 仔细阅读,在下列句子前标出T(对)或F(错).
　　( ) 1 With the help of the weather forecasts,people can know what they can do.
　　( ) 2 Weather forecasts can save people's lives.
　　( ) 3 Hurricanes and typhoons are very dangerous.
　　( ) 4 We really need weather forecasts in our life.