大秦国王安敦遣使来东汉，这是（）的国家同我国直接友好往来的开始。
参考答案：欧洲
用所给词的适当形式填空。
1. —What do you usually do on weekencls?
—I often do some _______ (read).
2. Here _______ (be) the results of the student activity survey.
3. _______ (drink) milk is good for our health.
4. I try _______ (eat) a lot of vegetables.
5. Good food and exercise help me _______ (study) better.
卖方对账单由供应商按（）编制，标明期初余额、本期购买、本期支付给供应商的款项和期末余额的凭证
A.日
B.年
C.季度
D.月
