1，2，3，1，9，，（）。 A．25 B．27 C．23 D．21

病历摘要：骨肉瘤患者男，21岁，右股骨下端肿痛2月余。查体：右股骨下端压痛，肿胀，可触及软组织肿块。行股骨下段正侧位片检查。

2.诊断依据是什么？

如图所示，质量为m的物块静止地放在半径为R的半球体上，物块与半球体间的动摩擦因数为μ，物块与球心的连线与水平地面的夹角为θ，则下列说法正确的是

A．地面对半球体的摩擦力方向水平向左

B．物块对半球体的压力大小为mgcosθ

C．物块所受摩擦力大小为mgsinθ

D．物块所受摩擦力大小为mgcosθ

耐火材料的结构性能指什么？

Dear editor,
I am Evan from Canada. Being the eldest child in the family has its
disadvantages．First of all, I have to share all my______(玩具)with my 61.______
younger sisters．0f course，they don’t n______to return the favors because 62.______
I’m totally uninterested in their things．______(除……之外)that， 63.______
they are always hanging around me．I just can’t get a moment’p______． 64.______
At meals．I have to eat whatever is______the plate regardless of65.______
the taste．My sisters only try one bite if it not ______favorite food． 66.______
In addition，w______it comes to practicing our musical instruments，I have to67.______
Dractice than double the time．Worst of all，I get a larger quantity68.______
of homework，______(对比)to them．69.______
I’m feeling rather annoyed．Can you please g______me some advice 70.______
Yours truly，
Evan Smith

审核记账凭证时，一般不审核( )。

A．记账凭证是否附有原始凭证，原始凭证内容是否与记账凭证内容相符

B．记账凭证是否附有原始凭证，原始凭证时间是否与记账凭证时间一致

C．根据原始凭证所作的会计分录是否正确

D．记账凭证中规定的项目是否已填列齐全