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题目内容
（国家开放大学-商务英语）
There are more and more ______ of software for accounting, this has made the different types of software more accessible in terms of costs and variety.
选择一项：
A.
manufacturers
B.
manufacturing
C.
manufactures
选择一项：
A.
manufacturers
B.
manufacturing
C.
manufactures
参考答案
