Teachers have to constantly update their knowledge in order to maintain their professional ________.
(2011·江苏，27)
A．consequence B．independence
C．competence D．intelligence
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
(2012·湖北)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
(2012·福建)—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
(2012·山东)My first ________ of him was that he was a kind and thoughtful young man.
A．expression B．attention
C．satisfaction D．impression
(2013·浙江，4)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
