The world’s population was about 6.5 billion in 2008. ___46___ three billion people ___47___ Asia now. That’s about half of the world’s population.
China has the ___48___ population in the world, and about one fifth of the people in the world live in China. ___49___ the large population, there is ___50___ living space for each family. And it’s difficult for lots of people to find jobs. A large population also causes many ___51___ for ___52___ nation. For example, we are short ___53___ energy and water. Most cities are more ___54___ than before, and the traffic is much ___55___. The large population ___56___ a serious problem.
So far, our government has taken many measures to control the population. One is know ___57___ the one-child policy. It has worked ___58___ in controlling China’s population. Thanks to the policy, China is developing ___59___ and people’s living conditions are improving rapidly. However, the population problem is ___60___ serious in China. We still have a long way to go.

A．About B．More C．Over D．Less

A．lived in B．live in C．lives in D．live

A．largest B．biggest C．biggest D．most

A．As B．Because C．For D．Because of

A．more B．less C．little D．fewer

A．difficulty B．difficult C．difficulty D．difference

A．the all B．all C．the whole D．whole

A．for B．of C．in D．to

A．crowd B．crowds C．crowding D．crowded

A．busy B．heavy C．heavily D．heavier

A．become B．becomes C．became D．has became

A．for B．at C．as D．in

A．well B．good C．hard D．hardly

A．quick B．quickly C．rapid D．fast

A．ever B．never C．ready D．still