【正文】
___ desert in the world.3. The Caspian Sea is ____________ of all the salt lakes.4. The Nile is _________ river in the world.higherthe biggestthe deepestthe longestTask 2Task 31c Use the information in 1b to make conversations.A: What’s the highest mountain in the world?B: Qomolangma task 1 2a Listen and number the facts(1 4) in the order you hear them. 6,300 5,000 5,464 300___ The Yangtze River is about ____ kilometers long and the Yellow River is ___ kilometers long.___ China has the biggest population in the world. It’s a lot bigger than the population of the US.___ China is over ___ years old. It has a much longer history than the US. The US is not even ___ years old.___ China is almost as bi