小王是某品牌鞋子的经销商，他以每4双鞋子300元的价格直接从生产商进货，同时以6双鞋子500元的价格卖给分销商。已知去年小王共赚了10万元钱。问：小王去年共卖出鞋子多少双？（）
A. 8400双
B. 10000双
C. 12000双
D. 13000双
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Salesperson：HOW does the skirt fit？Alice：May I try a smaller size，please？Salesperson：this
A. What about
B. Do you like
C. What is
D. How is
Frank：If it rains on Saturday，the party will be canceled． Tina：Oh，__________．We can always
A. it doesn’t matterl
B. don’t worry
C. all right
D. take you time
试说明题7-16图所示各电路属于哪种类型的滤波电路，是几阶滤波电路。
work has been done to improve the living standard．
A. Many
B. A great many
C. A large number of
D. A great deal of
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