Which of the following statements is TRUE, according to the author（）
A. Everyone has a right to hold his own opinion.
B. Free expression of opinions often leads to confusion.
C. Most people tend to be careless in forming their opinions.
D. Casual use of the word "opinion" often brings about quarrels.
可信计算机安全评估准则中，级别最高的是( )。
A类
B. D类
C. B3类
D. C2类
下列法律法规中，不属于知识产权范畴的是( )。
A. 《信息网络传播权保护条例》
B. 《中华人民共和国著作权法》
C. 《中华人民共和国商标法》
D. 《国家工商局关于禁止侵犯商业秘密行为的若干规定》
Rarely ______ their facilities to the full while many disabled people manage to make the best use of their senses.
A. able people use
B. able people do use
C. do able people use
D. do use able people
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