I've always wanted an iPhone and I've just saved enough money to buy ________. A.it B.this C.that D.one 答案:D [考查代词。句意:我一直想要一个iPhone手机,而且我刚刚攒够了钱要去买一个。one常用来指代上文提到的同类事物中的“一个”,表示泛指。故选D。]如图所示,是“探究电磁铁实验”的示意图,图中I1<I2=I3(1)比较图甲、乙可以得出______;(2)比较图乙、丙可以得出______.