广告监督管理的基础是（）。 A.法律体制 B.市场经济 C.行业自律 D.广告行业 发布时间：2019-02-23 15:13 │ 来源：www.tikuol.com 题型：单项选择题 问题： 广告监督管理的基础是（）。A.法律体制B.市场经济C.行业自律D.广告行业
题型：单项选择题 选词填空。从方框中选择适当的选项，使短文通顺。有两项是多余的。A.breakfast B.everywhere C.called D. important F.until F. dinner G.soon H.when I.going J.enjoy K.what L.family Americans spend their weekends in different ways. But usually they choose the same aim (目的) to rest, to 1________ beautiful places and to enjoy the time with their 2________ and friends. Some Americans hold parties on Saturday night. They will dance, sing and drink together till midnight. They won't get up 3________ 9 or even 11 o'clock next. morning. As 4________ as they get up they will go to the nearest shop to buy the daily newspaper. They can get news about films, plays, shows and sports in the newspaper. It will help them to decide 5________ to do on Sunday afternoon. Before 6________ 0ut on Sunday, they will have a meal, which is 7________ "brunch" ------ "br" from 8________ and "unch" from "lunch". They will make it at home to go to a nearby restaurant. After brunch some Americans may have a picnic. They will take many things with them, such as fruit, vegetables and so on. Sunday dinner i.s the most 9________ meal of the week. It is the biggest mealof the week and all family members try to be present. Weekends are to be welcome 10________ .Most people hope for them.1. ________ 2. ________ 3. ________ 4. ________ 5. ________6. ________ 7. ________ 8. ________ 9. ________ 10. ________ 查看答案
题型：单项选择题 设数列{an}，{bn}满足a1=b1=6，a2=b2=4，a3=b3=3，且数列{an+1-an}（n∈N+）是等差数列，数列{bn-2}（n∈N+）是等比数列．（1）求数列{an}和{bn}的通项公式；（2）是否存在k∈N+，使ak-bk∈(0，12)，若存在，求出k，若不存在，说明理由． 查看答案