碳钢通风管道、净化通风管道制作安装时，其工程量计量单位为( )。
A．m
B．m2
C．kg
D．t
参考答案：B
根据句意和首字母提示补全单词。
1. There is n________ much wrong with you, just have a rest.
2. Lei Feng always helped others in his l________. We should learn from him.
3. —Who can s________ the math problem?
—I think everybody can.
4. China now p________ enough rice to feed her people every year.
5. In his s________ time, he loves playing the violin and listening to music.
6. Yuan Longping is now working on d________ super hybrid rice.
DDST结果如何评定？
