Becoming a physician in the US costs considerable time and money.（）

Many physicians in the US are self-employed private phy...

单项选择题Many physicians in the US are self-employed private physicians（）

No salaried physicians teach in medical schools in the ...

单项选择题No salaried physicians teach in medical schools in the US.（）

The tie symbolizes all of the following except（）A．respe...

单项选择题The tie symbolizes all of the following except（）