涎石病最好发于
A．腭腺
B．唇腺
C．舌下腺
D．下颌下腺
E．腮腺
参考答案：D
解析：涎石病85%发生于下颌下腺。
造血干细胞与造血祖细胞均不表达的
A．LinB．HLA-DRC．Thy-1D．CD34E．CD38
．—We flew to Egypt for the holiday and we all had a wonderful time.
—_________.
A．Oh, that’s very nice of you
B．Congratulations to you
C．Oh, I’m glad to hear that
D．It’s a pleasure
