与半坡文化相比,大汶口文化中晚期的历史进步突出表现在( )。
A.定居生活
B.按血缘关系组成社会集团
C.从事农牧业生产
D.出现贫富分化
参考答案:D
读短文,判断正误。正确的写“T”,错误的写“F”。
I'm Jack. I'm ten. I like hamburgers. I don't like meat. In the morning, I like eggs, toast and jam, and juice
for breakfast. Then I go to school. In the evening, I eat supper. Then I do my homework.
( ) 1. Jack is ten years old.
( ) 2. Jack likes bread for breakfast.
( ) 3. In the evening, Jack does his homework.
( ) 4. In the morning, Jack doesn't go to school.
( ) 5. Jack doesn't like eggs.
某管道要更新一批测试桩标志桩,初步确定桩的尺寸为长1500mm,宽300mm,厚100mm,数量为850只,按小型钢筋混凝土制件定额1200元/m3计算,并含40%管理取费,17%税费,试计算制做这批标志桩大约需工程款多少?[提示:先计算标桩总量的体积]
计算题:计算应取费用。