诊断急性肾盂肾炎最有意义的检查是
A．尿红细胞计数 B．中段尿培养C．酚红排泄试验 D．尿酸碱度E．血尿素氮
参考答案：B
My uncle’s house in the downtown area is a bit smaller than that in the countryside, but it is twice _________ expensive.
A．as
B．too
C．rather
D．very
焊条的直径是以（）来表示的。
A、焊条外径
B、药皮厚度
C、焊芯直径
D、焊芯直径和一侧药皮厚度之和
