Colombo is one of the port cities of ______.
A.Sir LankaB.IndiaC.MalaysiaD.Iran
参考答案:A
单项选择。
—Did he wash her clothes? —Yes, .[ ]
A. she did
B. he did
C. she didn't
正常人全血的比重主要取决于()
A.血浆蛋白质的含量
B.血浆中晶体物质的含量
C.红细胞的数量
D.白细胞的数量
E.血小板的数量