本病最可能的诊断是
A．先兆流产合并肺结核B．恶性葡萄胎C．慢性子宫内膜炎D．绒毛膜癌E．功血
参考答案：C
The strange man asked me to hand the letter to _____ I met in the police station, saying it was very important.
A．whoever
B．whatever
C．whichever
D．whomever
客船和货船同时从A港出发到B港，客船每小时行38千米，货船每小时行26千米，几小时后，货船落在客船后面18千米？
