Many word processing programs include spell checker. It checks the spelling of every word in a (120) by looking up each word in its dictionary. If the word does not appear in the dictionary the user is (121) to possible misspelling and possible corrections are often (122) . Spell checker does not recognize unusual people names or specialized terms, but it will often allow you to create your own personal dictionary of specialized words you often use. Spell checker is a valuable aid to proofreading, but it can not catch the (123) of one correctly spelled word for another (such as form for from). Thus it does not (124) a document is free of spelling errors.

（124）处是（）

A.committee

B.correct

C.guarantee

D.prove

市长：当我们4年前重组城市警察部门以节省开支时，批评者们声称重组会导致警察对市民责任心的减少，会导致犯罪的增长。警察局整理了重组那年以后的偷盗统计资料，结果表明批评者们是错误的。包括小偷小摸在内的各种偷盗报告普遍地减少了。
以下哪项如果正确，最能削弱市长的论述( )

A．当城市警察局被认为不负责时，偷盗的受害者们不愿向警察报告偷盗事故。

B．市长的批评者们一般同意认为警察局关于犯罪报告的统计资料是关于犯罪率的最可靠的有效数据。

C．在警察部门进行过类似重组的其他城市里，报告的偷盗数目在重组后一般都上升了。

D．在重组之前的4年中，与其他犯罪报告相比，各种偷盗报告的数目节节上升。