Unit 1 The Changing World
综合能力演练
I.单项选择
1. — They have been to Australia.
— So _____ I.
A.do B.have been C.did D.have
2. The population of Shanghai is larger than _____ of Shenyang.
A.that B.it C.one D.this
3. —_____ the population of the U.S.A.in 2005?
—It _____ about 296 million.
