[題組:46-48] 
  Robot Cleaner
 Are you tired of sweeping floor every day?
Do you dream of having clean floor every day?
Then, you should try our robot cleaner that is a product of the latest technology.
You’ll be surprised at it functions.
 With it, you don’t need to sweep or mop the floor yourself.
 You just need to set the time.
Then, the robot will clean the floor for you when you are at work or go shopping.
 When you get home, the floor has already been clean.Isn’t it perfect and wonderful?
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 Mother’s Day Special Sale: 20% off!
【題組】46. Who may need the product?　　　　
(A) Climbers.
(B) Students.
(C) Housewives.
(D) Scientists.