问题补充:
Thousands of foreigners were to the Shanghai World Expo the day it opened.
A. attended
B. attained
C. attracted
D. attached
答案:
A. attended
B. attained
(答案→)C. attracted
D. attached
解析:动词辨析。Attend参加某种学术会议; attain达到,实现;attract吸引,引起;attach附加,贴上。句意:上海世博会开幕那天吸引了无数的外国人。故选C。