诊断成人脊柱结核最有价值的检查项目是
A．细菌培养
B．血沉
C．X线照片
D．结核菌素试验
E．血尿常规与血生化检查
参考答案：C
The beef is ______dear. Don't buy ______.[ ]
A. much too, too much
B. much too, much too
C. too much, too much
D. too much, much too
佝偻病是缺乏维生素A引起的。
