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题目内容
（信阳师范学院-英语词汇学）
Which of the following suffixes can be used to form both nouns and adjectives? ______ （ ）
A. -ion
B. -ism.
C. -ity
D. -ist
A. -ion
B. -ism.
C. -ity
D. -ist
参考答案