prep65 求教it和that的差别

65. A decade after initiating the nation's most comprehensive and aggressive antismoking program, per capita consumption of cigarettes in California declined from over 125 packs annually per person to about 60, a drop more than twice as great as in the nation as a whole.

A) per capita consumption of cigarettes in California declined from over 125 packs annually per person to about 60, a drop more than twice as great as

B) annual per capita consumption of cigarettes in California declined from over 125 packs to about 60, more than twice as great as that

C) California's annual per capita consumption of cigarettes declined from over 125 packs per person to about 60, more than twice as great as the drop

D) California has seen per capita consumption of cigarettes decline from over 125 packs annually to about 60, a drop more than twice as great as that

E) California has seen annual per capita consumption of cigarettes decline from over 125 packs per person to about 60, more than twice as great as that (D)

不太懂 it和that的差别

指代的是a drop

意思上应该是 annual per capita consumption "下降"比国家下降的两倍还多,而不是annual per capita consumption

那在用法上 it 和 that差别在哪里呢

一直很困惑

这道题目有涉及it和that的区别吗？lz不如选一道有涉及的题目来让大家帮忙吧

it在比较中：如than it形式，表示同一个事物，如同一张桌子，同一块表，

如果是than that形式，表示同一类事物，如同中木头制品，同一个牌子的表，

所以，一般不会用同一个东西来重复比较，than后一般都是用that