When ________ to the market, these products were very popular.A．introducingB．int
题型：不详难度：来源：
When ________ to the market, these products were very popular.| A．introducing | B．introduced | | C．introduce | D．being introduced |
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答案
| B |
解析
试题分析:考查非谓语动词。由结构可知When ________ to the market, 在句中做状语，而逻辑主语these products和introduce之间是被动关系， being introduced表示正在进行的被动，不合句意，所以B选项正确。补充完整后为：when they were introduced to the market。句意：当被引进到市场上的时候，这些产品非常受欢迎。 |
举一反三
I suggested that the problem _____as soon as possible.| A．referred to being solved | B．referred be solved | | C．referred to be solved | D．referred should be solved |
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With more forests _____being destroyed, huge _____ of good earth _____ washed away each year.| A．are ; number ; is | B．/ ; quantities / are | | C．be ; number ; are | D．/ ; quantities ;is |
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_____ what would happen，none of them could find a way out. | A．Left wondering | B．Having left wondering | | C．Leaving to wonder | D．Having left to wonder |
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Tom asked the candy makers if they could make the chocolate easier into small pieces.| A．break | B．breaking | C．broken | D．to break |
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Some very common things such as to the sun for a long time will do harm to people"s skin and even cause skin cancer| A．exposing | B．being exposed | C．having exposed | D．exposed |
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