23. The recommendation he gave me is that I ____ more traveling to open my eyes.
A. will do B. could do C. should do D. must do
22.It was between 1830 and 1835 ____ the modern newspaper was born.
A. how B. that C. which D. because
第一节:单项选择(共15分,每小题1分,满分15分)从A、B、C、D 4 个选项中,选出可以填入空白处的最佳选项。
21. However much _______, it will be worth it.
A. does the watch cost B. costs the watch
C. the watch will cost D. the watch costs
2. 已知复数满足: 求的值.
1. 设复数满足,且是纯虚数,求.
7. 计算 .
6. 若,那么的值是 .
5. 已知则= .
4. 设若对应的点在直线上,则的值是 .
3. 若复数是纯虚数,则= .