填空题

The amendments (of) the laws on patent, trademark and copyright (have enhanced) protection of (intellectual property) rights and (made them conform) to WTO rules.
A. of
B. have enhanced
C. intellectual property
D. made them conform

【参考答案】

A改为to

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单项选择题

The amendments (of) the laws on patent, trademark and copyright (have enhanced) protection of (intellectual property) rights and (made them conform) to WTO rules.A. ofB. have enhancedC. intellectual propertyD. made them conform