1 . "Not all birds can fly"means             ．

A．All birds can not fly	B．No birds can fly
C．None of birds can fly	D．All birds can fly

2 . Sustainable development is all about creating better health care, education, housing and improved standard of living for everyone, which is a simple idea,         is hard to put into practice.

A．one

B．the one

C．one that

D．that

3 . Jack Ma, the founder and chairman of China’s Alibaba Group, has a $28.6 billion fortune, ______making him the richest person in China.

A．it

B．one

C．that

D．which

4 . —Why is the cake so expensive?
—Maybe you don’t know a cake made of wheat costs less than _____ made of rice.

A．one

B．that

C．the one

D．another