显性黄疸病人的血清胆红素含量通常高于(μmol/L)()
A．34
B．78
C．68
D．158
E．178
参考答案：A
等比数列{an}中，a2+a3=6，a2a3=8，则q=______．
I don't understand the text there are few new words in it. [ ]
A. so
B. because
C. if
D. though
