Look and choose.看图选择正确的单词或短语。10分
(1)            A. by train       B. on foot
(2)       A. crossing         B. go straight
(3)       A. post office     B. science museum
(4)        A. by taxi       B. by bus
(5)      A. Slow down and stop at a yellow light.
B. Stop and wait at a red light.