The sales of a particular company in a market, expressed as a percentage of the total sales is called（）
A. market value
B. market share
C. market price
D. market cap
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Which one is NOT the reason that some people think it convenient to shop online（）
A. They can stay home to buy things
B. They can buy things at any time they like
C. They think they can get lower prices on the Internet
D. They can find free things they want
It is important that we__ the task ahead of time（）
A. will fish
B. finished
C. finish
D. should finish
__ in the company for three years, Mark has business negotiations（）
A. Having worked
B. Having been working
C. Have worked
D. Worked
Web前端开发技术中HTML是用来完成网页内容的，CSS是用来设置样式的（）
A. 正确 B:错误
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