2019年mpacc考试英语真题——形容词1704

{01}They eat less sugar and that’s ______ they have ______ white teeth.

A.because, healthy	B.why, health
C.because, health	D.why, healthy

解析：考查连词及形容词。Why引导的从句内容表示的是结果，because引导的从句表示原因。healthy修饰名词teeth。句意：他们很少吃糖，那就是他们为什么有健康洁白的牙齿的原因。
本题选D。
{02}As we have known from the map of the world，this is ________.

A.twice as large an island as that

B.twice as large as that island

C.as twice large as that one

D.twice as a large island as that

解析：考查倍数表达. 正确结构应该是：倍数 as adj+n as ；第一个as是副词，所修饰的形容词要紧跟在它后面，形容词所修饰的名词要跟在形容词的后面。所以应该使用：as large an island as。句意：正如我们从地图上所看见的一样，这是一个比那个岛大两倍的岛屿。
本题选A。