答案：
1.考点：易混淆词
辨析：latter --- being the second of two persons or things mentioned
latest --- something that is the most recent or current of its kind:
later --- comparative form of late
last --- coming after all others in time or order
答案：A
2.考点：词汇量
辨析：acknowledge --- admit the existence, reality, or truth of: acknowledge a mistake / They acknowledged having been defeated.
afford --- be able to meet the cost of: I can hardly afford to neglect my work. / I can ill afford to pay the dictionary. / I can only afford the cheapest.
allow for --- take a possibility into account: allow for the circumstances 考虑到具体情况/ The journey usually takes six days but you should allow for delays caused by bad weather. 这段旅程通常需要6天，但你应当考虑到坏天气造成的延误。
account for --- provide an explanation or justification: He is ill, that accounts for his absence. / How do you account for the accident?
答案：C
3.考点：词组
辨析：answer to --- have the name of: The dog answer to the name of Tom. / correspond to: The man does not answer to the description given. / This dictionary answers precisely to our needs.
answer for --- be responsible for: You will answer for your wrongdoing one day.
answer back --- impolitely interrupt esp. when scolded: When your mother scolds you, you shouldn’t answer (her back.
answer about ---
答案：B
4.考点：同义词
辨析：rare --- something that is rare does not happen often: The disease is rare, but very dangerous. / On the rare occasions when I do go to the theatre, I really enjoy it.
unusual --- not usual, common, or ordinary. different from what usually happens: We had a thunderstorm last night, which is unusual in the time of the year.
extraordinary --- highly exceptional; remarkable: extraordinary weather; / a man of extraordinary genius
unique --- unusual; being the only one of its kind [use this word especially about things or people that you think are extremely good]: The exhibition provides a unique opportunity to see all of the artist’s work.
答案： A
When we express “almost never”, we have such words as hardly ever; rarely, seldom.
When we refer to “not what usually happens” we often use such words as unusual, special, exceptional, or uncommon.
5.考点：形容词的特性
辨析：favored --- showing more favor to one (person, etc.) than to another:
favorable --- giving or showing approval; helpful: a favorable report on one’s work; / Is he favorable to the proposal?
favorite --- liked or preferred above all others; regarded with special favor:
favoring --- supporting
答案：B