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【单选题】
下列说法正确的是（ ）A.
对角线相等的四边形是矩形
B.
有一组邻边相等的矩形是正方形
C.
菱形的四条边、四个角都相等
D.
三角形一边上的中线等于这边的一半
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反馈参考答案：
举一反三
【简答题】在 Word 2010 中,文本转换成表格应该使用 选项卡中的 下拉按钮打开的 命令;表格转换成文本应该使用 选项卡中的 命令。
【单选题】______his job at the university, he's now running his own research company.
A.
In addition to
B.
As well as
C.
Except for
D.
But for
【单选题】我们按照重要人物保卫的要求，对工作人员逐一甄别
A.
We’ll check all the employees in addition to the requirements of common people
B.
We’ll raise the demands for VIP protection
C.
VIP protection is so important that we have to screen employees
D.
We’ll screen all the employees according to the requirements of VIP protection
【简答题】第二节：读写任务（共1小题，满分25分） 阅读下面的短文，然后按照要求写一篇150词左右的英语短文。 “In addition to teaching here, I also teach at a smaller high school 17 miles down the freeway from where I live. One day a few weeks ago I was drivi...
【单选题】在C#中,引用命名空间System的正确语句是( )
A.
using System;
B.
# import ;
C.
uses System;
D.
# include ;
【简答题】Word 2010 “表格属性”对话框中有 、 、 、 、 共 5 个选项卡,其中设置表格的文字环绕方式应使用 选项卡,设置顶端标题行应使用 选项卡,设置表格中文字的垂直对齐方式用使用 选项卡。
【单选题】_______ his research, man can set foot on the moon now.
A.
Because
B.
Thanks to
C.
So as to
D.
In addition to
【多选题】In addition to electron t ransfer, NAD has other important functions:
A.
Some key cellular functions are regulated by enzymes that use NAD + not as a redox cofactor but as a substrate in a coupled reaction in which the availability of NAD + can be an indicator of the cell’s energy status.
B.
A family of proteins called sirtuins regulate the activity of proteins in diverse cellular pathways by deacetylating the ε-amino group of an acetylated Lys residue. The deacetylation is coupled to NAD + hydrolysis, yielding O -acetyl-ADPribose and nicotinamide.
C.
NAD + also plays an important role in cholera infections. Cholera toxin has an enzymatic activity that transfers ADP-ribose from NAD + to a G protein involved in regulating ion fluxes in the cells lining the gut. This ADP-ribosylation blocks water retention, causing the diarrhea and dehydration characteristic of cholera.
D.
Both nicotinic acid and nicotinamide cure pellagra.
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