听材料,回答问题。 1. Where will the opening ceremony of the 30th Olympic s be held? A. In Bird's Nest. B. In London Bowl. C. In Water Cube(水立方). 2. How many times has the UK hosted the Olympic s so fat? A. Once. B. Three times. C. Twice. 3. What's the slogan of the 30th Olympic s? A. See the World,Visit London. B. One World,One Dream. C. Faster,higher,stronger. 4. Which country did the Olympic s first start from? A. China B. The UK. C. The ancient Greece.