AIM: To employ pulse wave Doppler ultrasonography to evaluate the changes in portal blood flow velocity in patients with chronic hepatitis C (CHC) receiving int
英语比较等级的使用原则是:不作比较用原级,两者比较用比较级,三者或多者比较用最高级。同学们做比较级考题时要特别注意句中是否有表示比较意义的标志词than,若有,句子原则上应用比较级。如: I didn’t buy the second-hand book because the seller wanted ______ money than I had expected. (山东日照中考题)