Question

根据中文提示，用词组的适当形式填空。每词一词。

用方框中选出所给词的适当形式填空。每词限用一次。

　　There are many serious problems in the world today．The population problem is 　　1　　 the greatest one of all．The world's population is 　　2　　 faster and faster．Two thousand years ago, there were only 250 　　3　　 people in the world．

　　　　In 2000, the world's population passed 6 billion．So far it has 　　4　　 6.6 billion．Because of the large population, there will be 　　5　　 living space for people．And it's very hard for so many people 　　6　　 jobs．A large population will also cause many 　　7　　 for the whole world．For example, we will be 　　8　　 of energy and water．Most cities will be more crowded than before, 　　9　　 the traffic will be much heavier．So lots of countries are taking some measures to 　　10　　 the population now．

Answer 1

答案：
解析：

1．probably　2．growing　3．million　4．reached　5．less　6．to find　7．difficulties　8．short　9．and　10．control