You shouldn’t go out without a coat , it’s rather cold .
A. unless B. even though C. however D. since
When ____ different cultures, we often pay attention only to the differenced without noticing the many similarities.
A. compared B. being compared C. comparing D. having compared
we should exploit the Antarctic’s natural resources is open to discussion. A.What B. Whether C. If D. That
World Wide Web was invented in 1991 by English scientist ,Tim Burners-lee.
A . \; an B. The; an C. The; the D. A; the
What shall we use for power when all the oil in the world has ____ ?
A. given out B. put out C. held up D used up
-----Could you do me a favor and take these books to my office?
-----Yes, _____.
A. for pleasure B. I could C. my pleasure D. with pleasure
