问题
单项选择题
6，12，36，180，1260，（）。
A．3780
B．6030
C．12600
D．13860
答案
参考答案：D
解析：
二级等比数列变式，每一项是前一项的2、3、5、7、(11)倍，而2、3、5、7、(11)是质数列，故1260×11=(13860)。
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6，12，36，180，1260，（）。
A．3780
B．6030
C．12600
D．13860
参考答案：D
解析：
二级等比数列变式，每一项是前一项的2、3、5、7、(11)倍，而2、3、5、7、(11)是质数列，故1260×11=(13860)。
完形填空（10分） On Sunday morning, I usually get up very late. I wash my face, and then go out to do morning exercises. It is about 8: 40 am. After I eat my , I often go to a shopping centre my mother. The shopping centre is our home, so we walk there. It takes us about 20 minutes to get there. The shopping centre has a good . It is called“蓝莓购物中心”in Chinese. It doesn’t have an English name. Can you it in English? It is new and big. There are many things there, such as TVs, fridges, computers, clothes, food drinks. There are many every day. There are men and women, the old and the . do many people come here to buy things? Do you know? Let me tell you. The workers there are always nice and friendly. The things there are usually good but not . If you come to my home, I can take you there and have a look.
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