— How many computers _____ in your classroom？—There are two .
A. are there
B. are you have
C. does you have
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Juice and water are healthy drinks，_____ Coke isn't healthy drink
A. and
B. but
C. or
_____ is a doctor .What about _____ father？
A. His，your
B. Her, your ’s
C. His，you
— Have you got a dictionary？—_______________
A. Yes，I do
B. Yes，I got
C. Yes，I have
服务器的性能主要表现在：_______、磁盘存储能力、高可用性、数据吞吐能力、可管 理性与可扩展性
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