最主要的治疗措施是A．卧硬床休息 B．牵引 C．硬脊膜外腔泼尼松龙注射 D．椎间盘摘

I can’t remember when I started collecting litter. But it was when I got tired of   46  litter nearby that I realized no one else was going to pick it up.

I live near a forest in Ohio, America. I can walk there   47  three minutes. I used to love going there to play with my dog. But one day there was   48  much litter there that I became very unhappy. I decided to clean up the forest, and I wanted to   49  happy when I went again. I made my first trip to clean the forest that afternoon. I took a big black rubbish bag with me. Ten minutes   50  I started to pick up litter, my bag was full! There were cans, bottles, broken glass and newspapers in it.

From then on, I  51  to the forest four times a year to pick up litter. I often stay there for three hours. It makes me feel   52  to do something for the environment. After each trip, I look through all the litter that I’ve collected. If   53  of it is recyclable（可回收利用的）, I’ll keep it. I can’t understand why people drop litter. But I will keep on picking it up   54  they stop dropping it.. I know I am only doing a small bit   55  the earth, but I still think it is important.

小题1:A.seeing           B.throwing          C.dropping         

小题2:A.after            B.for               C.in

小题3:A.such         B.very              C.so                   

小题4:A.make         B.feel              C.look             

小题5:A.after            B.later             C.before               

小题6:A.had gone     B.have gone         C.go               

小题7:A.tired            B.sad               C.great

小题8:A.many         B.few               C.any      

小题9:A.until            B.after             C.as soon as           

小题10:A.helped          B.to help               C.help             

如何理解教育是人类社会特有的活动?

在因特网中，屏蔽各个物理网络细节和差异的是

A．主机-网络层

B．互联层

C．传输层

D．应用层

洗胃的禁忌证有（）

A.硫酸中毒

B.生物碱中毒

C.幽门梗阻

D.近期上消化道出血

E.肝硬化伴食管静脉曲张

正保公司2009年1月1日外购一建筑物，购买价款1 000万元，该建筑用于出租，作为投资性房地产核算。年租金40万，每年年初收取。该公司采用公允价值模式对其进行后续计量。2009年12月31日该建筑物的公允价值为1 040万元，2010年12月31日该建筑物的公允价值为1 020万元；2011年1月1日正保公司出售该建筑物，取得出售价款1 060万元。不考虑相关税费。 要求： （“投资性房地产”科目要求写出明细科目，答案中的金额单位用万元表示）

根据上述资料编制相关会计分录。