一个多边形的外角和等于内角和的一半,那么这个多边形是[ ]
A.五边形
B.六边形
C.七边形
D.八边形
答案:B
单词拼写(注意所填词的正确形式)
小题1:As long as your suggestion is r____________, we’ll take it.
小题2:There were many job ___________(申请者)for the position, but in the end only two were hired.
小题3:A few _____________(反对意见) have to be dealt with before we can start the project.
小题4:G__________ speaking, a real friendship means not taking but giving.
小题5:The __________(大多数)of students think that they should be given more time to do sports after class.
小题6:I keep my reference books near my desk for _________ (方便).
小题7:Barack Obama was e___________ the first black president in American history.
小题8:The two bags d_________ in color --- one is red, the other black.
小题9:The packet of white p_________ the police found in his room turned out to be cocaine.
小题10:The ___________(步骤) of cloning animals is quite difficult to undertake.
对汽车燃油经济性的评价,一般是通过汽车燃油消耗量试验来确定的,它是用于评价在用汽车技术状况与维修质量的综合性参数,在诊断和分析汽车故障时可作为参考。()