【简答题】No one can change the weather.But if read the signs correctly around us,we can know how the weather will be.This way of telling what the weather will be like on the following day or two is called weat...
【单选题】Which of the followings is the characteristics of waves? I. Waves move in different direction II. waves are of different sizes and on the surface of the sea. III. Waves present at any moment.