A	B	C
Speed: 5 km/h Features: slow but environmentally friendly	Speed: 40 km/h Features: fast but expensive	Speed: 30 km/h Features: cheap and convenient
D	E	F
Speed: 80-100 km/h Features: fast and comfortable	Speed: 40 km/h Features: slow but cheap	Speed: 600km/h Features: very fast but pretty dear

【小题1】What is the disadvantage of taking a plane?

A．Too fast.

B．Very convenient.

C．So expensive.

【小题2】If Bob is afraid of flying and he needs to go to Shanghai from Changsha quickly, which way is the best for him?

A．By ship.

B．By train.

C．By taxi.