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【单选题】
What is the purpose of this study?A.
to record social habits
B.
to analyze anti-social behavior
C.
to analyze frequency and purposes of social gatherings
D.
to analyze frequency and purposes of keeping diaries
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反馈参考答案：
举一反三
【判断题】Once you establish your main points, you need to decide the order in which you will present them.
A.
正确
B.
错误
【简答题】电视和音响系统使用的遥控器是通过( )进行通信的。
【单选题】You have to decide the occupation you want to _______ once you graduate from college.
A.
pursue
B.
purchase
【单选题】已知白磷（P 4 ）与CuSO 4 溶液反应的化学方程式为（Cu 3 P中P的化合价为-3价）：11P 4 ＋60CuSO 4 ＋96H 2 O =20Cu 3 P＋24H 3 PO 4 ＋60H 2 SO 4 ，则2molCuSO 4 能氧化白磷的物质的量是（）
A.
1/20mol
B.
1/10mol
C.
1/5mol
D.
2/5mol
【单选题】—I’m thinking about withdraw (退出)from the committee. —Think it over. Once you decide, you won’t be ______ to the committee again.
A.
adopted
B.
admitted
C.
adapted.
D.
allowed
【单选题】298K 时,下列反应组装成原电池,测得电动势为零,则 c(Cu 2+ ) 应为 ______ mol/dm 3 。 Ni + Cu 2+ = Ni 2+ (1mol/dm 3 )+ Cu 已知 (Cu 2+ /Cu) = 0.3419V, (Ni 2+ /Ni) = -0.257V
A.
5.05×10 -27 mol/dm 3
B.
5.71×10 -21 mol/dm 3
C.
7.01×10 -14 mol/dm 3
D.
7.56×10 -11 mol/dm 3
【简答题】已知全集U=R,集合A={x丨2-丨x丨>-3},B={x丨丨2x-3丨<11},则A∩B=_______;Cu(A∩B)=_____.
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