ENG question , thz

就咁讀呢兩句句子, 第二句的確通順d..所以我會揀Ans. 2....我再諗我幾時會用ever夾係have __ been, 我只諗我只會用於問題度...如 : have u ever been to? have u ever tried?等等....我自知英文不太好, 沒有能力說出any mistake...但我很想說出用ever確是有點不妥..ever有點不確定及比較的意味...我後來在yahoo字典查, 結果如下

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1. (多用於疑問句,否定句和表示條件和比較的附屬子句)在任何時候;從來;至今
If you ever see George, give him my kind regards.
如果你見到喬治,請代我向他致以親切的問候。
She was happier than she had ever been.
她比以前任何時候都更高興。
He is one of the very best men I have ever met.
他是我遇見的最好的人之一。
No such person ever existed.
這樣的人從來沒有存在過。
Have you ever been to London?
你到過倫敦嗎?
2. 永遠,始終;總是
He is ever ready to help you.
他總是樂意幫助你的。
3. (用於疑問副詞或代名詞之後,加強語氣)究竟,到底
Who ever can it be?
那究竟會是誰呢?
What ever put that idea in your head?
到底是什麼使你想出那個主意的?
4. 【美】【口】(用於加強感歎語氣)非常
Was she ever tired!
她累極了!

因此只有Ans. 2 - long been known可以說明一直是, 長久以來..(肯定的語氣)...去說明意思, 若轉變成問句便可用ever, Has Economics ever been known as a gloomy science?

I hope it can slightly help u, maybe some other people here can express more explanation to prove Ans. 2 is correct :-)

2007-04-02 21:34:56 補充：
You're welcome =) But my answer is not professional, it can be your reference only..hehe..