AIDS control and prevention is a to China as well as the whole world． [ ] A．surp
来源：网络
时间：
推荐文章
![AIDS control and prevention is a to China as well as the whole world． [ ] A．surp](/pic/43_913927.jpg)
AIDS control and prevention is a ________ to China as well as the whole world．
[]A．surprise
B．challenge
C．reaction
D．threat
试题答案
答案：B
解析：surprise意为“吃惊，惊奇”；challenge意为“挑战”；reaction意为“反应”；threat意为“威胁”。艾滋病的控制和预防对中国和世界来说应该是一个“挑战”，而不是“惊奇、反应或威胁”。