新视野大学英语视听说的第1册Unit4 leading in答案

leading in?有这个环节么?应该是listening in 吧
Listening In
Task 1:Weather Forecasting
1.B 2.D 3.C 4.A 5.D
Task 2:Wrong Weather Forecast
1.They are planning to have their picnic on the weekend.
2.They will be able to have a volleyball match,one class against another.
3.It’ll be fine,and maybe a little cloudy,but there’ll be definitely no rain.
4.Those weatherman are useless.
5.All the pollution and the hole in the ozone layer are responsible for the changeable weather.
Task 3:Global Climate Change
Global climate is causes by the greenhouse gases in the lower atmosphere.These gases are largely due to the burning up of gas,coal and oil,and the destruction of forests.Scientists estimate that,by 2100,the average surface temperature of the earth will rise by 1.5-3.5℃ and global average sea level will rise by 15-95 cm.All coastal cities will be at risk as a result of flooding and storm surges.Clearly,global climate change is becoming a great threat to our environment.
Task 4:An Announcement
Friday looks really good.Sunny all day with a daytime temperature of 70 degrees.But bundle up Friday night,as the temperature will drop sharply.On Saturday,it will be cold and cloudy in the morning with strong winds.In the afternoon,there’s a good chance of snow flurries,and the temperature will only reach 37 degrees!On Sunday morning it will be cloudy,with some rain showers in the afternoon.But temperatures will rise to 50 degrees.