59 （）

It is very difficult to get from one place to another in Tokyo because __________.

• A、the city is so large and so high

• B、there is no traffic

• C、we don't know the road 

• D、the city is so large and the traffic is so heavy

The passage implies that there are many senses we __________.

• A、can use only in emergencies

• B、may not understand at present

• C、never realize we have 

• D、do not actively use in everyday living