C
all是指三個(gè)或三個(gè)以上,而both是指兩個(gè)；
both of兩者都
Both of them are students.他們倆都是學(xué)生.
all of三個(gè)或在三個(gè)以上都
All of us are going to see the game.我們都要去看比賽.
either of (兩者其一)
neither of(兩者都不)
這兩個(gè)后＋單數(shù)
both of (兩者都),后＋復(fù)數(shù)
all of (三者或三者以上都是)
這道題因?yàn)?is poor-educated,如果Is改成are的話肯定選A,但是是Is,只能選C了.