Man cannot go on increasing his number at the present rate. In the【C1】______30 years man w

ill face a period of crisis.【C2】______experts believe that there will be a widespread food【C3】______ Other experts think this is【C4】______ pessimistic (悲观的), and that man can prevent things from【C5】______ worse than they are now. But remember that two thirds of the people in the world are under-nourished or starving now. 【C6】______ thing that man can do is to limit the【C7】______ of babies born. The need【C8】______ this is obvious, but it is not【C9】______ to achieve. People have to be【C10】______ to limit their families. In the countries of the population【C11】______ , many people like big families. The parents think that this【C12】______ a bigger income for the family and ensures there will be someone in the family who will look【C13】______ them in old age. Several governments have【C14】______ birth control policies in recent years.【C15】______ them are Japan, China, India and Egypt. In some【C16】______ the results have not been successful. Japan has been an【C17】______ . The Japanese adopted a birth control policy in 1948. People were【C18】______ to limit their families. The birth【C19】______ fell from 34. 3 per thousand per year to about 17. 0 per year【C20】______ present.

【C1】

A．second

B．recent

C．next

D．late