11.录音中有一篇短文,听短文两遍,然后从每小题A、B、C中选出能回答每个问题的正确答案. 16.How does the sea look when the sun is shining? A.Dangerous. B.Beautiful. C.Very wide. 17.How many quarters of the world is sea? A.One quarter. B.Two quarters. C.Three quarters. 18.How high is the highest mountain in the world? A.About 9 kilometers. B.About 11 kilometers. C.Several kilometers. 19.What is the temperature of the deep sea water? A.Cool. B.Warm. C.Cold. 20.What can you see in most places of the sea? A.Fish and animals. B.Nothing. C.Fish and plants.