妇女生育力开始下降的时间是（） A.33～40岁 B.30～35岁 C.30～45岁

下列各组中的物质属于同一类别（指酸、碱、盐、氧化物）的是（　　）

A．氯化钙  氧化钙  硝酸钙

B．烧碱  纯碱  熟石灰

C．纯碱  胆矾  硫酸钠

D．干冰   冰    金刚石

Many people think teachers give pupils too __1__ homework. They say that it is __2__  (necessary) for children to work at home in their free time. __3__, they argue that most teachers do not properly plan the homework tasks they give to pupils. The results are __4__ pupils have to repeat tasks which they have already done at school.

Recently in Greece many parents complained about the difficult homework __5__ (give) to their children. The parents said that most of the homework was useless, and they wanted to stop it. Spain and Turkey are two countries which __6__ (stop) homework recently. In Denmark, Germany and several other countries in Europe, teachers cannot set homework at weekends. In Holland, teachers allow pupils to stay at school to do their homework. The children are free to help one __7__. Similar arrangement also exists in some British schools.

Most people agree that homework is not fair. A pupil who can do his homework in a quiet and comfortable room is in a much __8__ (good) position than a pupil who does his homework in a small, noisy room with the television __9__. Some parents are ready to help their children with their homework. But other parents even take __10__ interest at all in their children’s homework

下列关于肠外营养的叙述，错误的是（）

A.肝功能障碍者，应提供富含支链氨基酸的溶液作为氮源

B.葡萄糖是大脑的主要能源

C.临床应用的脂肪乳剂必须经中心静脉输注

D.短期禁食者不需补充微量元素

E.葡萄糖耐量减低的病人开始肠外营养时可按每8～10g葡萄糖加胰岛素1u给予

常用的1ADL评定有____、____。

对科研单位和大专院校服务于各业的技术成果转让、技术培训、技术咨询、技术服务、技术承包所取得的技术性服务收入，企业所得税的优惠政策是( )。

A．暂免征收

B．免征1年

C．免征3年

D．免征5年