4.C. eventually是派生词， 其词义为最终， 终于， 所以C是答案。
需要掌握的相关近义词词组：
cure treat remedy 治疗
apparent obvious evident - clear 明显的
eventually finally at last in the end ultimately 最终
5. The policeman asked him to identify the thief.
A) name B) distinguish
C) capture D) separate
5.A/B. identify的基本词义为识别， 鉴别， 因此A是答案。
需要掌握的相关近义词词组：
distinguish tell discriminate 区分，分辨
separate divide分开
6.Americas emphasis on the importance of education for everyone has spurred scientific research.
A) encouraged B) endangered
C) prevented D) enlarged
6.A. spur的基本词义为激励;鞭策，因此A是答案。
需要掌握的相关近义短语结构：
prevent...from.../keep...from...防止.../阻止...
需要掌握的相关近义词词组：
encourage urge inspire spur 激励
7. Some of the stories were mildly amusing.
A) slightly B) hardly
C) faintly D) sufficiently
7.A.mildly的基本词义为温和地， 稍微，mildly在句中修饰amusing
因此mildly在句中的词义为稍微， 因此A是答案。
需要掌握的相关近义词词组：
mildly gently 温和地
mildly slightly a little - somewhat稍微地
hardly rarely scarcely - seldom 几乎不
faintly dimly 微弱地
amusing funny interesting 有趣的