| The basic causes are unknown, although certain conditions that may lead to cancer have been ＿＿＿＿ A. identified B. guaranteed C. notified D. conveyed |
A. B. C. D. 来源：www.examda.com
2.
| The green house effect is caused by the higher ＿＿＿＿of CO2 in the atmosphere. A. consequence B. supplement C. assembly D. concentration |
A. B. C. D.
3.
| The destruction of these treasures was a loss for mankind that no amount of money could ＿＿＿＿. A. stand up to B. come up with C. make up for D. put up with |
A. B. C. D.
4.
If we don't receive any reply by tomorrow morning, I shall have to ＿＿＿＿ him on the phone. A. get to B. get onto C. get on with D. get over |
A. B. C. D. 来源：www.examda.com
5.
| As we are on the point of ＿＿＿＿ some important business with them, we should like to know exactly about their credit standing. A. transmitting B. transferring C. transacting D. transporting |
A. B. C. D.
| 题号 | 正确答案 | |
| 1 | A | |
| 2 | D | |
| 3 | C | |
| 4 | B | |
| 5 | C |
