填空题

Who welcomes visitors and makes sure they go to the right office（）

【参考答案】

D

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单项选择题

A．B Brand Heaters were first put on the market in 2001．and now it has the biggest volume of sales．
B．D Brand Freezers were introduced to the market late but it has the biggest volume of sales．
C．Each product has two brands and with the same volume of sales．

单项选择题

Contents of 10-ounce can of Beer Calories 100 Carbohydrates 0.5 grams Protein 4 grams Fat 0 grams How many colories are in the beer（）

A．100
B．4
C．0