．Faced with a problem，you have to it first，and then try to find a solution.
A. resemble
B. substitute
C. concentrate
D. analyze
网友回答
A. resemble
B. substitute
C. concentrate
D. analyze
解析：D
解析 考查动词辨析。句意为：面对问题，你必须先分析，然后尽力找出解决办法。resemble看起来像；substitute代替；concentrate集中(注意力)；analyze分析。由句意知选D项。