某学校地理兴趣小组设计并做了如下实验（图1），据此回答第1-3题。 1．该实验

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.

小题1:	A．About B．More C．Over D．Less

小题2:	A．lived in B．live in C．lives in D．live

小题3:	A．largest B．biggest C．biggest D．most

小题4:	A．As B．Because C．For D．Because of

小题5:	A．more B．less C．little D．fewer

小题6:	A．difficulty B．difficult C．difficulty D．difference

小题7:	A．the all B．all C．the whole D．whole

小题8:	A．for B．of C．in D．to

小题9:	A．crowd B．crowds C．crowding D．crowded

小题10:

A．busy B．heavy C．heavily D．heavier

小题11:

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

小题12:

A．for B．at C．as D．in

小题13:

A．well B．good C．hard D．hardly

小题14:

A．quick B．quickly C．rapid D．fast

小题15:

A．ever B．never C．ready D．still