【简答题】阅读理解。 Air Air has no smell. Air has no taste, But when the wind blows, You feel it on your face. Look at a kite, Or a plane in the air. How do they stay there? They ride on air. How does a balloon Ris...
【简答题】Inventors are always looking for ways to make our lives easier, greener and a whole lot more fun. Take a look at the following breakthroughs in science and technology. What in the world will inventors...
【单选题】No single adjective is enough to describe the size of the blue whale, and few people realize how big it is when compared with other mammals. By any standard, it is the largest creature known to man. T...