爱思英语编者按：总结近五年亚洲与北美托福考试语法部分试题的基础上，为同学总结出错误率在60%以下的易错难题汇编，希望大家能汲取常见错误原因，从而有效地跳开托福考试中的出题陷阱.

1. glaciers may rise that honing this century.

答对率：50%
答案：b

2.anthropologist jane goodall a concerning primate behavior her of chimpanzees.

答对率：46%
答案：b

3.the of gold in 1848 san francisco suddenly from a port into one of the world s richest and most famous .

答对率：44%
答案： d

4.allan pinkerton, of detective agency that bears name,directed a civil war espionage system confederate lines.

答对率：38%
答案：c

5.the city of kalamazoo, michigan,derives its name from a native american word……"bubbling springs."

a.meant
b.meaning
c.that is meant
d.whose meaning

答对率：46%
答案：b

6.salt is manufactured in quantities that exceed those of most,……,other commercial chemicals.

a.of an not
b.not if an are
c.are not an
d.if not an

答对率：49%
答案： d

7.contemporary film directors,some of write the scripts for,act in,and produce their own pictures, are ever more control of their art.

答对率：43%
答案：a

8.petroleum composed a complexof hydrogen and .

答对率：31%
答案：a

9.the air inside a house or office building often has higher concentrations of contaminants …… heavily polluted outside air.

a.than does
b.more
c.as some that are
d.like of

答对率：50%
答案：a

10.emily dickinson s garden was a place…… great inspiration for her poems.

a.that she drew
b.by drawing her
c.from which she drew
d.drawn from which

答对率：50%
答案：c