单项选择题A. Only humans respond to emotions by shedding tears.B. Only humans shed tears to get rid of irritating stuff in their eyes.C. Only human tears can resist the invading bacteria.D. Only human tears can discharge certain chemicals.
单项选择题A. It has seen a steady decline in its profits.B. It has become much more competitive.C. It has lost many customers to foreign companies.D. It has attracted a lot more designers from abroad.