试题与答案

设等比数列{an}的前n项和为Sn,若a3=3S2+1,a2=3S1+1,则公比

题型:选择题

题目:

设等比数列{an}的前n项和为Sn,若a3=3S2+1,a2=3S1+1,则公比q=(  )

A.1

B.2

C.4

D.8

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0430/ffcf59bdf00133e6e7675c4e2dfc4ee9.html

下面是错误答案,用来干扰机器的。

1. is  2. sitting  3. seat  4. but  5. says  6. don't  7. going  8. not  9. and  10. too

试题推荐
题型:阅读理解

Sichuan Restaurant
Type: Chinese food
Hours: Mon~ Fri (7:30 am to 10:30 pm)
Sat~ Sun (7:30 am to 12:30 pm)
Services: Eat—in
About Us: We have all kinds of Chinese food and are famous for our hot Sichuan dishes. Dinner starts from $55 per person.
Tel: 555 0980
Italian Pizza Restaurant
Type: Italian food
Hours: Tue ~ Sun (12 noon to 11 pm)
Mon (closed)
Services: Take—away, Home delivery(送餐)
About Us: Cheapest and best food in town.
Pizza for four people $7.50 and up
Tel: 555 7887
小题1: If you want to buy breakfast on your way to school in the morning , where should you go?
A.Before 7:30 am in Italian Pizza Restaurant.
B.Before 7:30 am in Sichuan Restaurant
C.After 7:30 am in Italian Pizza Restaurant.
D.After 7:30 am in Sichuan Restaurant.
小题2:You and your friend want to go out to a restaurant for dinner. It is Monday evening and you have a total of  $ 50 to spend. Where will you go?
A.Sichuan Restaurant.B.Italian Pizza Restaurant.
C.Neither of them.D.Both of them.
小题3:Which of the following is true about Italian Pizza Restaurant?
A.It has good but expensive food.
B.It is open earlier than the other restaurant.
C.It is the restaurant that allows take—away.
D.It is a great place for people to get together.
查看答案
微信公众账号搜索答案