23. The stone in John's 'Rockpool' design is used
A. for decoration.
B. to switch it on.
C. to stop water escaping.
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22. John chose a dishwasher because he wanted to make dishwashers
A. more appealing.
B. more common.
C. more economical.
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.
11&12. Which TWO facilities at the leisure club have recently been improved?
A. the gym
B. the tracks
C. the indoor pool
D. the outdoor pool
E. the sports training for children
26. Salvinia molesta plagues
A forage grass
B rice fields
C coconut trees
D fruit trees
E water hyacinth
F parthenium weed
G Brazilian beetles
H grass-scale insects
I larval parasites
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