入世后，我们必须遵守世界贸易组织关于透明度、非歧视、公正、行政干预等方面的基本原则。( )
参考答案：对
Being able to speak another language fluently is a great ______ when you're looking for a job.
A．chance
B．importance
C．advantage
D．assistant
--- Are there ___________ students in your school?
--- Yes, _____________ the students is about 2000.
A．a number of; a number of
B．the number of; the number
C．a number of; the number of
D．the number of; a number of
