可形成肾静脉和腔静脉癌栓的泌尿系肿瘤是（）。
A.肾癌
B.肾盂癌
C.膀胱癌
D.睾丸肿瘤
E.前列腺癌
参考答案：A
大气压力参与全口义齿固位的条件是（）
A.基托与黏膜吸附
B.黏膜受压变形
C.边缘封闭完整
D.基托磨光面高度磨光
E.义齿发挥功能
______ she realized it was too late to go home.
A. No sooner it grew dark than B. Hardly did it grow dark thatC. Scarcely had it grown dark than D. It was not until dark that
