文章的四大要素是()。A．人物、事件、环境、情节 B．材料、主题、结构、语言 C．论

阅读短文，判断正(T)误(F)。

      Hello! I'm Danny. Welcome to Canada. Today is December 25th. It's Christmas. At Christmas, department

stores usually have Santas. Santas are fun. Every child wants gifts at Christmas. They don't go to school on

Christmas Day. Their parents don't go to work, either. People have a Christmas holiday. They are all very happy.

( ) 1. Every child wants gifts at Christmas.

( ) 2. At Christmas, one department store usually has one Santa.

( ) 3. Christmas Day is in November in Canada.

( ) 4. People have a Christmas holiday in Canada.

( ) 5. Children usually go to school on Christmas Day.

新闻单位组织机构的意义是什么？

患者女性，12岁，阵发性腹痛伴黑粪一天入院。体格检查发现：四肢皮肤有散在的出血点，腹平软，脐周有压痛。实验室检查：WBC8.5×10/L，Hb110g/L，BPC100×10/L，大便OB（+++），尿Rt蛋白质（+）、红细胞10～15个/HP、白细胞0～1个/HP。

首选针对病因的治疗措施是（）

A.肾上腺皮质激素

B.雷尼替丁

C.抗生素

D.复方路丁

E.氯苯那敏（扑尔敏）

以下几项运动形式中，不适合于老年人的是（）

A、静力运动

B、休闲性运动

C、有氧运动

D、对抗性运动

E、柔韧运动

电加热器置于主循环冷却水回路，用于变流器运行时的冷却水温度调节，使冷却水（）符合要求