下面有关派特（PET）检查在肺癌诊断中应用的叙述哪项是正确的（）
A.可以明确肺癌的病理类型
B.由于是一种代谢性影像学检查，不易受到其他因素的干扰
C.检查费用低廉而常用于肺癌的普查
D.是一种无创性定性检查
E.敏感性和特异性非常高
参考答案：D
解析：此题难易适中，主要考对派特(PET)检查的了解。派特(PET)检查是一种无创性定性检查，并不能明确细胞病理类型。由于是一种代谢性影像学检查，因而容易受到多方面因素的干扰，其敏感性和特异性仍不很高，费用又很昂贵，因而临床应用受到一定限制。
| Seeking to build support among black families for its education reform law, the Bush administration paid a prominent black pundit $240,000 to promote the law on his nationally syndicated television show and to urge other black journalists to do the same. The campaign, part of an effort to promote No Child Left Behind (NCLB), required commentator Armp Williams "to regularly comment on NCLB during the course of his broadcasts," and to interview Education Secretary Rod Paige for TV and radio spots that were aired during the show in 2004. Williams said Thursday he understands that critics could find the arrangement unethical,but "I wanted to do it because it’s something I believe in." The top Democrat on the House Education Committee, Rep. George Miller of California, called the contract "a very questionable use of taxpayers’ money" that is "probably illegal". The contract, detailed in documents obtained by USA TODAY through a Freedom of Information Act request, also shows that the Education Department, through the Ketchum public relations firm, arranged with Williams to use contacts with America’s Black Forum, a group of black broadcast journalists, "to encourage the producers to periodically address" NCLB. He persuaded radio and TV personality Steve Harvey to invite Paige onto his show twice. Harvey’s manager, Rushion McDonald, confirmed the appearances. |
From the context, the word "pundit" underlined in Paragraph 1 is probably similar to all the following terms EXCEPT______.
A．bandit
B．journalist
C．anchorman
D．commentator