脑脊液常规化学检查包括( )
A．蛋白质
B．葡萄糖
C．酮体
D．氯化物
E．胆红素
参考答案：A,B,D
Despite the fact that Jack has lived in USA for many years，he finds it no easy to _____himself to its culture and customs.
A．adopt
B．adapt
C．apply
D．concentrate
矿石品位一般是用元素或氧化物含量的重量百分比表示，除此以外还有哪三种？
