帮我选出下面这题的正确答案

问题描述:

帮我选出下面这题的正确答案
1._____of the books in the library are bought for students reading.
A.Three fourth B.Three four C.Three fourths D.Third fours

c
英语中表示“几分之几”,分子用基数词,如one、two、three等,分母则用序数词,如third、fourth、fifth等.在分子大于1的情况下,分母要用复数表示,例:“三分之一“用“one third”,“三分之二”则是“two thirds”,此时“third”要变成复数形式.