收到版友內信請求提供英文考科第50題"find out"釋疑的書面紙本佐證資料，礙於不知道怎麼使用imgur上傳拍照或截圖到PTT，只能用打字將原貌呈現。
以下為英英、英漢字典對"find out"和"uncover"的定義:
Merriam-Webster's Advanced LEARNER'S ENGLISH DICTIONARY(p617,p1784):
find out[phrsal verb] 1 to learn or discover (something) by making an effort.
e.g. We need to find out where the meeting is being held.
uncover (verb)2:to "find out" or become aware of (something that was hidden
or secret)
e.g.We are still trying to uncover (the truth about) what happened.
Longman Dictionary of Contemporary English (English-Chinese)(p557,p1679):
find out phr v 1 [I;T(=find sthg. ⇔ out)] to learn or discover (a fact that was
hidden or not known)發現，查明
e.g.I won't tell you－you'll have to find out for yourself!
uncover(v.)[T] 2 to "find out" (something unknown or kept secret; discover
揭露;發現;使知道
e.g.The police have uncovered a plot to rob this bank.
uncover和discover本來就是同義字，且如上所示，其定義也是"find out"
另增補前母校外語大學五專部英文系(大學部翻譯系)
所使用的教科書對動詞片語"find out"的定義:
(和後母校譯研所不同間)
2nd Year Conversation & Writing (Unit 1,p1)
find out(the truth/a secret/an address/the time/when/what/where/who etc.)
to make an effort to discover or get to know (something)
很明顯find out的意思即付諸努力discover
綜合以上資料，請容我用英文表達意見和舉例解釋
Let me get it straight to you in English. Suffice it to say, I'm one hundred
percent positive that you'll never see a question which
takes form like No.50 in any given English proficiency test that measures
candidates'language ability, let alone academic exams in the US such as SAT or
ACT. It all boils down to the specific context about the situation in which
the correct phrasal verb is used. In critiquing this type of question from a
professional standpoint, I would say the problem is that an example sentence
is lacking for the question and that the answer key provided by TPC is too
arbitrary. Having said that,(D)uncover is the option that makes the most
sense. To "learn about" has an overtone of passivity as people are either told or
hear about something they didn't know. On the contrary,to “uncover”is more
active because one takes the action/ the initiative to “find out”the truth
or facts about something unknown.　Over and above, “uncover”is synonymous
with “discover”, both of which can be used interchangeably.　 Please refer
to the sentence made below.
“We’ll find out the solution to the hot-button issue sooner or later.”
Find out here means to uncover something. Uncover means to discover something
and when you discover something you essentially find out something.
“We’re going to Mars to uncover alien life.”
= “We’re going to Mars to discover alien life.”
In both aforementioned cases, “uncover” and “discover” can be replaced by
“find out”without the slightest difference in meaning.

thanks for sharing your knowledge with me. I learn a lot on this question.

N大真的很熱心！謝謝提供，希望大家都可以釋疑成功！

謝謝N大讓大家注意到語言的細節之美

感謝n大 真的超用心 我就是寫uncover...

謝謝N大，不愧是翻譯和老師，英文解析得好詳盡，現在有正義感不計代價為人發聲的不多了。樓上被幫忙還到處噓人真是好笑！

謝謝N大提供資料釋疑，本來還擔心你不會回信。真是太強大了...

超級詳盡的，謝謝提供

結果最後維持原答案如果我有看仔細一點我會選learn about，不過建立在我當時有想到得知的話。但如果我寫過paper用過uncover可能就會選uncover，總之我覺得應該要有前後文，不然uncover也可以，為什麼答案不給...
btw 我其實是選look for啦 所以有沒有改我都錯 lol