答案：A.
翻譯：這所學(xué)校學(xué)生的數(shù)量比他們學(xué)校學(xué)生數(shù)量要更大/多.
1.that為指示代詞,代指前面的the number of the students,而theirs = their school.
即原句可以改寫(xiě)為：The number of the students in this school is larger than that in theirs.
= The number of the students in this school is larger than the number of the students in their school.
2.而B(niǎo)項(xiàng)的of mine沒(méi)法理解,mine倒是可以等于my school,但是介詞of有誤,和前文不對(duì)應(yīng).
前句of the students,但是mine不能換成the students,只能換成my school.13.The number of teachers in our school is larger thanof theirs.A .it B. thisC. thatD.those不止一篇資料出現(xiàn)過(guò)這樣的題干。該如何解釋呢這個(gè)題目答案還是C that.比較必須是同類事物比較，所以只能用that代替the number of the students.此題出題有失嚴(yán)謹(jǐn)，最好是that in theirs.建議樓主不要太相信一些參考資料。我也是覺(jué)得不妥，想問(wèn)問(wèn)清楚。謝謝我認(rèn)為還應(yīng)該是in theirs，不是of theirs.我剛才搜索過(guò)，說(shuō)成that in theirs的更多。