131.We can never expect ____ bluer sky unless we create ____ less polluted world.

A.a;a

B.a;the

C.the;a

D.the;the

132.In order to find ____ better job,he decided to study ___ second foreign language.

A.the;a

B.a;a

C.the;the

D.a;the

131.答案是A，

考查冠词，sky和world前面有形容词修饰时，用不定冠词。

132.答案是B，

考查冠词，第一空格为泛指；第二空格a+序数词+名词，表示“又一，再一”。