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【简答题】
在人体内的约占60%--70%的是______,仅占体重的4%左右,但对维持人体正常的生理活动有重要作用的物质是_ _。其中,钙和磷是骨骼和牙齿的重要成分,儿童缺钙易患________,成年人缺钙易患_______;而_______是构成血红蛋白的一种成分,缺少时人会患贫血。
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举一反三
【判断题】介绍信在结构上一般由标题、称谓、正文、结语、落款这五部分组成。( )
A.
正确
B.
错误
【单选题】utoCAD中, 用哪项命令可以移动图形
A.
MOVE
B.
ARRAY
C.
OFFSET
D.
COPY
【单选题】MEMO To: Peter From: Tom The publicity leaflets for the new model will not be book from the printers until Friday 11 July.
A.
We might have the leaflets before 11 July.
B.
We won't have the leaflets before 11 July.
C.
We are sure to have the leaflets before 11 July.
【简答题】所谓类的封装是指在定义一个类时,将类中的属性私有化,即使用 关键字来修饰。
【单选题】--utoCAD的保存格式是
A.
*.DWG
B.
*.MAX
C.
*.Mid
D.
*.PSD
【单选题】In the United States, there's a widespread belief that statistics don't lie. Perhaps that's why surveys are such an important part of American life. For many years, politicians, businesspeople, and sc...
A.
the census gives an accurate count of the number of people in the United States
B.
the United States government has taken a census every ten years
C.
the census gives a lot of information about population and changes in American life and society
D.
according to the latest census, the average American is happier than ever before
【判断题】丝巾就是系在颈部的,觉对不可能变身为一件礼服。
A.
正确
B.
错误
【简答题】介绍信由( )、( )、( )构成。
【单选题】单项选择题。 —What did you do ________ ? —I went to the movies. [     ]
A.
next morning
B.
over the weekend
C.
in the weekend
D.
next Monday
【单选题】MEMO To: Peter From: Tom The public leaflets for the new model will not be back from the printers until Friday 11 September.
A.
We might have the leaflets before 11 September.
B.
We won't have the leaflets before 11 September.
C.
We are sure to have the leaflets before 11 September.
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