设a、b、c都是正数，则a+1b,b+1c,c+1a三个数（）

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设a、b、c都是正数，则a+

1

b

,b+

1

c

,c+

1

a

三个数（）

A：都大于2

B：都小于2

C：至少有一个大于2

D：至少有一个不小于2

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D

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阅读短文，从方框中选择单词，使短文意思完整、通顺。每空一词，每词只能用一次。

busy family playing but show

Dear Grace,

Here is a photo of my ____. We are all at home now. And we are all ____. What are my grandparents doing? Oh, my grandfather is ____ chess. My grandmother is reading a newspaper. And my father is watching CCTV news. It is his favorite ____. My mother is cooking in the kitchen. What am I doing? I'm using the computer, ____ I'm not playing computer games. Haha, I am writing an e-mail to you.

Molly

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