Their experiment was designed under extreme restriction of resources ,but its impressive innovation was _____(prove) a source of inspiration
for other scientists for many yrars to come.

答案=to prove
為何不是 pro ..

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1.如果選proved話後面經常要加to be ，形容詞或是由by +受詞。

The main piece of evidence was proved to be planted (by police)

I was proved wrong.

The following theorem was proved by M.H. Stone.

全句之意是--->這個實驗是在極有限的資源下來設計的，但它令人讚賞的創新被証明對未來的其他科學家是一個啟發的來源。


2.prefer +Ving.....to+Ving=prefer..+rather than+原形動詞

由於後面的doing...的關係，你只能選prefer...+to...

3.

1.Even though 代表一種目前的存在的現實= Although

2.Even if 代表一種假設語氣=If

如果要選2的話，這個句子就必須改為

Even if she scored over 80, she wouldn't be stisified with her grade.

如果想深入探討--> http://www.bbc.co.uk/worldservice/learningen...t/learnitv122.shtml

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