43. Including land and water, the state of Alaska _______ an area of 1,530,700 square kilometers, equal to about one-sixth of the size of the United states.
a.having
b. where there is
c. which is
d. has
答案是D, 我不太明白equal to 的用法,在这句话里是形容词短语吗? 但我记得equal 还有动词的用法, 请问什么时候是做动词呢? 一般toefl考试中是考形容词形式比较多吗?