—This returned Chinese scholar has become one of the top experts in this field .
—Yes , I know him very well . He in Africa with wild animals for eight years .
| A．has worked | B．had worked | C．worked | D．has been working |
Last year the number of students who graduated with a driving license reached 200,000，a(n) ________ of 40,000 per year.(2010·江西)
| A．average | B．number | C．amount | D．quantity |
It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.
| A．symptom | B．similarity |
| C．sampleA | D．shadow |
—Why do you choose to work in an international travel agency.
—Well，you know，English is my ________.So it is my best choice.
| A．strength | B．talent | C．ability | D．skill |
My first ________ of him was that he was a kind and thoughtful young man.
| A．expression | B．attention |
| C．satisfaction | D．impression |
As the world's population continues to grow，the ________ of food becomes more and more of a concern.
| A．worth | B．supply | C．package | D．list |