《全球青少年环境公约》要求我们必须做到的[ ]

①不要到处乱丢垃圾

②不要浪费资源

③爱护野生动植物

④减少使用私家车，尽量乘坐公交车

A．①②③

B．②③④

C．①②④

D．①②③④

How long will Wal-Mart take to become as big in China as it is in the America().

A. Half a decade.

B. A decade.

C. Two decades.

D. Several decades.