While other scientists are keeping____eye on changes in the H5N1 bird flu strain, the scientists in England are working on vaccines, in case it becomes highly infectious in ____humans.
| A．a , / | B．an, / | C．the, an | D．an, the |
相关试题
27．The small town_____ we spent our holiday last month lies in_____ we think is now part of Chengdu.
| A．where; that | B．which; that | C．that; where | D．where; what |
26．I read all the books I could find_____ these matters
| A．throwing light upon | B．threw light upon |
C．that th rows light upon |
D．throws light upon |
25．His daughter is always shy in_____ and she never dares to make a speech to_____.
| A．the public; the public | B．public; the public |
| C．the public; pubic | D．public; public |
24．Disappointingly, the reducing of the payment is said______.
| A．to be decided | B．to have been decided |
| C．will be decided | D．have been decided |
相关知识点
推荐套卷
粤公网安备 44130202000953号