单项选择题
超声显像检查是诊断胎儿畸形的首选方法
A．对
B．错
超声显像检查是诊断胎儿畸形的首选方法
A．对
B．错
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单项选择题
In the specific factors model, a 0% increase in the price of food accompanied by a 5% increase in the price of cloth will cause wages to ________, the production of cloth to ________, and the production of food to ________.
In the specific factors model, a 0% increase in the price of food accompanied by a 5% increase in the price of cloth will cause wages to ________, the production of cloth to ________, and the production of food to ________.
A．increase by more than 5%; increase; remain unchanged
B．increase by 5%; remain unchanged; remain unchanged
C．remain constant; decrease; decrease
D．increase by less than 5%; increase; decrease