The main difference between the "R" strain and the "S" strain lies in their__________．

According to the passage, what is the main difference between credit money and fiat money？

According to the shop assistant, the main difference between the two types of cameras lies

What is the passage mainly concerned about？A．The difference between dream and dreamless sl

The news is mainly aboutA．the differences between the senators.B．the cost of an insurance

The main difference between a newspaper journalist and a TV journalist is thatA．the former

According to the interviewee, which is the main difference between the first and the secon