依据《政府采购代理机构资格认定办法》的规定,()负责从事政府采购招标代理业务机构资格的认定工作。
A.人力资源和社会保障部
B.商务部
C.财政部
D.住房和城乡建设部
参考答案:C
阅读短文,判断正(√)误(×)。
Hello, everyone! Nice to meet you. My Chinese name is Liu Chen. My English name is Lucy. I am ten
years old. I am l.4 metres tall. My sister is l.3 metres tall. I am taller. I like to wear jeans. I live in a big
house near school. I go to school by bike. I am in Grade Four. I like English very much. What about you?
( ) 1. Lucy's Chinese name is Liu Chen.
( ) 2. Lucy is twelve years old.
( ) 3. Lucy is l.4 metres tall.
( ) 4. Lucy's sister likes to wear jeans.
( ) 5. Lucy goes to school on her bike.
我国南宋数学家杨辉曾提出这样一个问题:"直田积(矩形面积),八百六十四(平方步),只云阔(宽)不及长一十二步(宽比长少12步),问阔及长各几步."如果设矩形田地的长为x步,那么同学们列出的下列方程中正确的是 ( )
A.x(x+12)=864
B.x(x-12)=864
C.x2+12x=864
D.x2+12x-864=0