夏季奥运会的吉祥物最早出现在()年。
A.1972
B.1895
C.1969
D.1955
参考答案:A
家庭企业的创业成本低,主体体现在()。
A·融资成本低
B.技术成本低
C·用人成本低
D.经营管理成本低
He is always working______he can.
A.as hardly as
B.as hard as
C.so hardly as
D.so hard as