Question 11-15 Section C Directions: In this section you willhear a recorded short passage. The passage is printed in the test paper, butwith some words or phrases missing. The passage will be read three times.During the second reading, you are required to put the missing words or phraseson the Answer Sheet in order of the numbered blanks according to what you hear.The third reading is for you to check your writing. Now the passage will begin. 测验二-11-15.mp3: The world population today is about 6 billion. But only about 11 percent of the world’s land is suitable for farming. However, the area of farmland is becoming smaller and smaller (11) . So it will be difficult to feed so many mouths. There are several reasons why farmland is being(12) . First, a lot of the land is being used for the(13) of houses. Secondly, some of the land has become wasteland because wind and (14) have removed the top soil. Thirdly, some of the land has become too salty to(15) . Therefore, a big problem that we face today is hunger.