秦始皇灭六国后，统一了全国文字，这种汉字称作：
A.隶书
B.小篆
C.楷书
D.行书
参考答案：B
同学们已经学习了有理数的知识，那么全体有理数的和是（ ）．
Having retired from business, he now _______ himself _______ his garden.
A drowns ; to B. involves; to C. occupies ; with D. abandon ; with
