短文填词 根据短文内容和以下提示：1）首字母提示， 2）语境提示， 3）汉语提示，在每个空格内填入一个适当的英语单词。所填单词要求意义正确，拼写准确。（
In 2010, the world’s population was about 6.8 billion. . __________ than three billion people live in Asia now. That’s almost half of the world’s population.
China has the largest population in the world, and about one . _f_________ of the people in the world live in China. Because of the large population, there is less living._s_________ for each family. And it is difficult for lots of people to find jobs. At the same time, the large population has cause many __________(其他的) difficulties for the whole nation. For example, it is hard for China to supply energy and water to satisfy people’s daily __________. Most cities are more crowed than before, and the traffic is much _h_________. Natural environments are becoming worse and worse. The large population has been a serious problem.
So far, our government has __________ many measures to control the population. One is known as th one-child policy. It has worked well in __________（控制） China’s population. Thanks __________ the policy, China is developing quickly and people’s living conditions are improving rapidly. H__________, the population problem is still serious in China. We still have a long way to go.