电缆明敷安装方法是（）。A、直接使用支架敷设在建筑构架上； B、使用钢索悬挂或用挂钩

Li Ping，a Junior One student at High School was quite busy over the last winter vacation，not just with homework .Li，together with ten other classmates made a      group to call on people to join the Clean Your Plate Campaign(光盘行动).

The      students went to many restaurants and told the people the importance of      food. “Excuse me，do you know that 20 million people around the world still haven’t got enough to        ? Could you please not     food ?”They would say this kind of thing hundreds of times every day．   

      ,the activity has got the support of many people．In a restaurant in Chengguan District，the owner gives the guests who have eaten all the food they ordered a ticket．People can enjoy a       meal when they have ten tickets . More than 50 restaurants in Lanzhou have begun to offer          dishes and encourage their guests to take leftovers(剩菜)home.

Wasting food is a serious problem around the     ，not only in China. It's said that 1.3 billion tons of food ends up as waste last year. This is as    as one third of all the food in the world．The UN Environment Program and the Food and Agriculture Organization held a“ Think ,Eat，Save”program in January,2013 to help reduce food waste.

小题1:

A．volunteer

B．band

C．dance

D．sport小题2:

A．ten

B．eleven

C．twelve

D．thirteen小题3:

A．planting

B．cooking

C．buying

D．saving小题4:

A．eat

B．wear

C．spend

D．sleep小题5:

A．buy

B．waste

C．order

D．sell小题6:

A．Luckily

B．Rudely

C．Unluckily

D．Quietly小题7:

A．delicious

B．sweet

C．free

D．rich小题8:

A．1arger

B．smaller

C．cleaner

D．cheaper小题9:

A．city

B．country

C．world

D．restaurant小题10:

A．often

B．expensive

C．many

D．much

从传说、考古和文献等角度看，中国的国家形态产生于

A．原始农耕时代

B．炎黄传说时期

C．禹传启家天下后

D．方国联盟体制出现后

大熊猫是我国国宝级动物，它的基本结构层次是（　　）

A．组织→器官→细胞→动物体

B．细胞→组织→器官→系统→动物体

C．细胞→器官→组织→动物体

D．细胞→-系统→器官→动物体

继电器电气特性测试设备的主要有（）部分组成。

A.电源

B.测试仪表

C.开关及转接原件

D.表示灯具及表示灯

尼可地尔属于

A．钙通道阻滞药
B．钾通道阻滞药
C．钾通道开放药
D．钠通道阻滞药
E．氯通道阻滞药