Mr. Li has ordered ___ for the school lab.A．three equipmentsB．three pieces of eq
题型：不详难度：来源：
Mr. Li has ordered ___ for the school lab.| A．three equipments | B．three pieces of equipments | | C．three pieces of equipment | D．three pieces equipment |
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答案
| C |
解析
| equipment为不可数名词，表示复数要在前面加上数量词。 |
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