为帮助大学生学到权威的英语知识，本网站特提供以下资料：
1. Nowhere in nature is aluminum found free, owing to its always____with other elements, most commonly with oxygen.
A. being combined B. having combined ? C. to combine D. combined
2. Physics is the present?day equivalent of ____used to be called natural philosophy, from ____ most of present day science arose.
A. which, what B. that, which C. what, which D. what, that
3. On no account ____ever leave the baby at home alone.
A. should you B. you should C. shall you D. you shall
4. ____the center of our planetary system was considered as heresy by the church in the Middle Ages.
A. It is the sun and not the earth ?B. That the sun and not the earth
C. Being the sun and not the earth ?D. The sun and not the earth
5. The reason that his property was confiscated by the country, it ____, was that he was involved in a lot of fraudulent activities during the war.
A. was turned out B. was being turned out? C. being turned out D. turned out
6. I’d rather you ____by train because the weather forecast said there would be heavy snow tomorrow.
A. went B. should go C. will go D. go
7. Einstein won the Nobel Prize in 1921 and enjoyed great fame in Germany until the rise of Nazism ?____he was expelled from Germany because he was a Jew.
A. when B. who C. then D. which
8. Nowhere but in the remotest region of the country ____find a place to settle down.
A. can he B. he can C. he D. for him to
9. With one leg broken in that car accident, he cannot even walk,____run.
A. let alone B. that’s to say ? C. not to speak D. not to mention
10 .____, she led a life of complete seclusion.
A. Being disgraced B. Disgraced C. Disgracing D. She was disgraced