建设项目常用的四种风险应对策略是什么？

阅读理解。

     December 25th is Christmas Day. In America, it is in winter. But in Australia, it is just in summer.

     On Christmas Day, people in Australia can see the fine sun, beautiful beaches, and green trees. But in

any of the shops we can see many pictures of snow on the windows of them. The Christmas trees are

covered with fake (假的) snow.

     On Christmas Day, some families eat turkeys. But more families eat seafood and fruits. Some people

eat on the beach and some in the forest. After eating, they always dance happily.

     In a word, Christmas Day in Australia is very special.

根据短文内容完成句子，每空只填写一个英文单词。

1. Christmas Day in Australia is              from that in America.

2. On Christmas Day boys and girls wear cool              such as T-shirts and miniskirts in Australia.

3. On Christmas Day, we can see green trees and beautiful              everywhere in Australia.

4. On Christmas Day if you are in the shops in Australia, you will feel that it seems to be in              .

5. On Christmas Day many families have activities not in their              but in the open air in Australia.

图1、图2是甘肃嘉峪关、酒泉一带魏晋古墓中发现的以庖厨为题材的彩绘墓砖。这两幅图

图1
图2

A、反映了魏晋时期当地民族构成情况B、证实了魏晋时期男女劳动分工状况C、展现了魏晋时期当地动物养殖状况D、有助于了解魏晋时期饮食生活状况

根据WHO诊断标准，高血压定义为（）

A.>130/85mmHg

B.>140/90mmHg

C.>150/95mmHg

D.>160/100mmHg

E.>180/110mmHg

并称中国古代三大工程的是（）。

A．秦始皇陵

B．都江堰

C．万里长城

D．坎儿井

E．京杭大运河

基尔霍夫电流定律和电压定律的数学表达式分别为ΣI＝0，ΣU＝0。