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【简答题】
阅读理解。 Hello, everyone! This is my bedroom. That is my green bed. It's very lovely. Isn't it? Can you see the pink pillow? It's my pillow. I like it very much. The dresser is beside (在……旁边) the bed. It's brown. And a clock is on the dresser. It's pink and purple. Oh, this is my desk. It's blue. There is a computer on the desk. I like to use the computer very much. I often use it to do my homework. My books are under the desk. The desk is beside the chair. My chair is blue, too. Ah, my baseball! It's on my chair. I like my bedroom very much! 1. Where is the dresser? A. Next to (靠近) the bed. B. Behind the bed. C. Near the desk. 2. Is the clock on the dresser? A. No, it isn't. B. Yes, it is. C. I don't know. 3. What color is the desk? A. Green. B. Red. C. Blue. 4. Where are the books? A. Under the desk. B. Behind the desk. C. Near the desk. 5. Is there (有) a baseball in the room? A. No, there isn't. B. Yes, there is. C. We don't know.
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举一反三
【单选题】一个口袋内装有大小相同的7个白球和1个黑球,任取3个,并使其中不含黑球,有( )种取法。
A.
35
B.
48
C.
50
D.
60
【简答题】一个口袋内装有大小相等的1个白球和已编有不同号码的3个黑球,从中摸出2个球. (1)共多少种不同的结果? (2)摸出2个黑球有多少种不同的结果? (3)摸出2个黑球的概率是多少?
【判断题】机械设备在运转时,工人可以用手调整、测量零件或进行润滑工作,以提高生产效率。
A.
正确
B.
错误
【判断题】机械设备在运转时,工人可以用手调整、测量零件或进行润滑工作。
A.
正确
B.
错误
【简答题】(本小题满分12分) 一个口袋内装有大小相同的2个白球和3个黑球. (1)从中一次摸出两个球,求两球都是黑球的概率; (2)从中一次摸出两个球,求两球恰好颜色不同的概率.
【判断题】机械设备在运转时,工人可以用手调整、测量零件或进行润滑工作,这样有利于提高工作效率
A.
正确
B.
错误
【简答题】你认为,为什么虚拟网络结构会成为某些组织今天的好选择?
【单选题】一个口袋内装有大小相等的一个白球和已编有不同号码的3个黑球,从中摸出2个球,则摸出2个黑球的概率是(  )
A.
2 3
B.
1 2
C.
3 4
D.
1 4
【单选题】一个口袋内装有大小相同的 1个白球和 3个红球(已编有不同号码),从中摸出2 个红球的概率是( )
A.
3/5
B.
1/5
C.
1/2
D.
4/25
【单选题】一个口袋内装有大小相同的7个白球和1个黑球,从口袋内取出3个球,共有( )种取法。
A.
36
B.
48
C.
56
D.
72
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