Questions 21-25
Choose the correct letter, A, B or C.
Global Design Competition
21 Students entering the design competition have to
A produce an energy-efficient design
B adapt an existing energy-saving appliance
C develop a new use for current technology.
22 John chose a dishwasher because he wanted to make dishwashers
A more appealing
B more common
C more economical
23 The stone in John’s ‘Rockpool’ design is used
A for decoration
B to switch it on
C to stop water escaping
24 In the holding chamber, the carbon dioxide
A changes back to a gas
B dries the dishes
C is allowed to cool
25 At the end of the cleaning process, the carbon dioxide
A is released into the air
B is disposed of with the waste
C is collected ready to be re-used