睾丸恶性肿瘤常见的症状和体征为质硬的无痛性或疼痛性睾丸肿块。 （）
参考答案：对
—I find that I have been unlucky these days.
—_________ Everything will become better soon. [ ]
A. Keep silent!
B. Why not cry?
C. Cheer up!
D. How about you?
中央一些部委和一些省市公开招考司(局、厅)级和处级领导者的制度是( )。
A．聘任制
B．考任制
C．选任制
D．委任制
