( )时期，我国园林艺术日臻精进，出现了一批造园专著。
A．隋唐
B．明清
C．宋元
D．秦汉
参考答案：B
Which of these paintings was painted by the famous artist Leonardo da Vinci? _______.
A．None
B．No one
C．Nothing
D．Neither
阻塞性黄疸病人的尿液呈
A．鲜红色B．乳白色C．黄褐色D．酱油色E．淡黄色
