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【多选题】
读秀支持一下几种检索方式?A.
基本检索
B.
高级检索
C.
专业检索
D.
目次检索
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反馈参考答案：
举一反三
【简答题】A: _______ the matter? B: My sister and I ____ sore throats. ______ we go to school? A: No, you _________.
【单选题】Many frogs _____ the sound of their voices using special sacs in their throats.
A.
amplify
B.
widen
C.
expand
D.
enlarge
【判断题】Urgent disorders refer to those situations that would not be significantly affected by a delay in treatment, for example, sore throats, rash, chronic back pain and sprains.
A.
正确
B.
错误
【判断题】如果n阶矩阵A的秩为r（
A.
正确
B.
错误
【简答题】A: _______ the matter? B: My sister and I ____ sore throats. ______ we go to school? A: No, you _________.
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