(3/3)Three-fourth;are

(3/3)Three-fourth;are three fourth和three-fourth一样么 [Ar]3d54s2中的[Ar]是什么意思?rt Nealy____of the earth_____covered by the sea.A.three fourth;is B.three fourth;is C.three fourth;are D.three fourth;areA.three fourth;is B.three fourths;is C.three fourth;are D.three fourths;are I think____of the materials I listened to at the beginning of the exam____easy A.three fourth;ar...I think____of the materials I listened to at the beginning of the exam____easyA.three fourth;areB.three fourths;are为什么选A而不选B呢?求详解 three fourths与three-fourth有什么不同?three-fourth of the students a fourth和“three fourths”是什么意思? 化学试剂3N是不是AR three quarters 和three fourth的区别和用法 l think ( ) of the materials l listened to at the beginning of the exam( ) easy.A.three fourths,is B.third four,are C.three fourths,are D.three fourth,areTell me why 为甚materials为复数，就用are呢？它中心词不是3/4吗、那3/4 three,there,thank和fourth中的th哪个发音不同 owens studied 495 children in the fourth grade from three [Ar]3d9 4s1 [Ar]3d5 4s1 [Ar]3s2 3p3 [Ar]3d5 4s2 单电子数最多的是哪一个 Cr的基态原子是 [Ar]3d5 4s1,而不是 [Ar]3d4 4s2 为什么亚铁离子的电子排布式不是[Ar] 3d54s1或[Ar] 3d44s2? 找出每组括号中发音不同的单词.1、start(ar) car(ar) cat(a) are(are)2、Mark(ar) poor(oo) Martha(ar) car(ar)3、brother(o) bottle(o) love(o) butter(u)4、under(u) flute(u e) blue(ue) June(u e)5、shark(ar) Mars(ar) cake(a e) park(ar)6、u ____ of the boys in the class like singingA One fourth B Three fourthC First FourD Twos fourth the sea covers about ( ) of the earth.a.one third b.three quarter c.three-fourth d.three quarters