We wish to call your attention to the ( ) in the L/C, since there is no possibility of L/C extension.<br />A. variety<br>B.validity <br>C.possibility <br>D.probability

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题目内容（国家开放大学英语语法）

We wish to call your attention to the ( ) in the L/C, since there is no possibility of L/C extension.
A. variety
B.validity
C.possibility
D.probability

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西安石油大学-工程测试技术