【题目】You should be about this kind of serious cold; it often kicks back when you think you are better.
A. careful B. hopeless
C. careless D. hopeful
在线课程【答案】A
【解析】考查形容词。A. careful 细心的； B. hopeless 无希望的； C. careless 粗心的； D. hopeful有希望的。你应该小心这种严重的感冒;当你认为自己更好时，它往往会重新开始。根据句意可知选A。