题目内容

【26】

A. project
B. computer
C. system
D. network

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【29】

A. failed
B. exposed
C. shown
D. succeeded

A typical ______ uses 20 litres of water a minute.

A. power shower
B. simple shower
C. bath

【39】

A. alternatives
B. decisions
C. solution
D. suggestions

【34】

A. proofs
B. effects
C. solutions
D. uncertainty