H1N1 control and prevention is a to China as well as the whole world．
| A．surprise | B．challenge | C．reaction | D．threat |
相关试题
Claire had luggage an hour befor her plane left.
| A．check | B．checking | C．to check | D．checked |
As is know to all, People’s Republic of China isBiggest developing country
in the world.
| A．the ;不填 | B．不填 ；the | C．the ；the | D．不填；不填 |
His first novelgood reviews since it came out last month.
| A．receives | B．is receviing | C．will receive | D．has received |
I walked up to the top of the hill with my feiend,we enjoyed a splendid view of the lake
| A． | which | B． | where | C． | who | D． | that |
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