— He has been playing computer games these weeks.

— It’s no __________ he didn’t do well in the test this time.

A．surprise

B．wonder

C．matter

D．problem

下列地区与其主要土地利用类型连接正确的是

A．黄河下游地区----水田

B．长江中下游地区----林地

C．内蒙古高原----草地

D．横断山区----旱地