马方(Marfan)综合征的主要表现是()
A.漏斗胸或鸡胸
B.管状骨长度和宽度不成比例
C.脊椎侧弯及后突畸形
D.管状骨细长,手足部尤著
E.骨皮质变薄,骨小梁纤细
参考答案:D
Eat _____ cake you like and leave the other for _____ comes in late.
A any, who B. every, whoever C. whichever, whoever D. either, whoever
统一资源定位器URL的格式是“协议://IP地址或域名/路径名/文件名”。()