What is the source of the problem?

What is the mentioned cause of the obesity problem of children？A．The food is unhealthy.B．C

What is the problem of the lecture rooms？A．They have poor lighting.B．The capacity is limit

What does the professor imply about the sugar industry in Florida？A．It is a good source of

According to the interviewee, what is the problem of the present science education？A．Scien

What is the problem with Russias space station？A．It has lost its primary 6xygen sources.B．

Which is NOT described as a source of the problems facing the 1970s Yugoslavia？A．Lack of r