单项选择题

（）

A. 30 washing machine were sold on Friday.
B. 25 washing machine were sold on Monday and Thursday.
C. Business was better over the weekend.

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单项选择题

（）

A. Four age-groups were compared.
B. Age 16-24 had the steadiest labour force.
C. Age 25- 44 had the greatest increase in labour forc

单项选择题

PRODUCT CATALOGUE（）

A. Curry Beef in a case is not as heavy as Sliced Pork.
B. There are more tins in a case for Stewed Pork Ribs than Stewed Pork.
C. One case of Stewed Pork Ribs is heavier than one case of Sliced Perk.