A. endurance B. persistence C. stubbornness D. resolution
A. Therefore B. However C. Furthermore D. Nonetheless
A. give B. move C. deliver D. refer
A. charged B. devoted C. adapted D. related
A. 每半年进行一次 B. 每年至少进行一次 C. 每年进行一次 D. 每季度进行一次
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