A、 Engineer.
B、 Passengers.
C、 Architects.
D、 Workers of airport.

【正确答案】 C

【答案解析】解析：信息明示题。由And as we are architects，we like to think of solutions．可知，这两个设计者都是建筑师，故选C。

A、 Airports.
B、 Passengers.
C、 Architects.
D、 Companies.

【正确答案】 B

【答案解析】解析：信息明示题。由for travelers left in a place overnight，or those in need of a quick sleep．可知，睡袋是为了滞留在一个地方过夜的旅客或者小憩一会儿的人设计的。故选B。

A、 Sleep boxes can be rented for different lengths of time.
B、 Renters of normal height can stand up inside.
C、 Bedding can be automatically changed.
D、 Renters can surf the Internet inside the box.

【正确答案】 A

【答案解析】解析：信息明示题。由The Sleep boxes are meant to be fixed in airports and rented for 30 minutes to several hoursat atime可知，这个睡袋可以租用的时间为每次30分钟到几个小时。故选A。