The dictionary as well as the books _____ to Linda.
A.belong
B.is
C.belongs
D.are
答案:C
(湖南湘西,6,3分)湘西矮“特大悬索桥”是世界上跨峡谷最长的桥梁,桥长1180m,这个数用科学记数法表示为________m.
以下变量名中合法的是( )
A.x2-1 B.print C.str_n D.2x