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【简答题】
光电鼠标在电脑中应用非常广泛, 其原理就是利用发光二极管照射移动表面（如图所示），并被反射回鼠标的光学感应器，用以记录移动动作，以此来捕捉移动位置的不同画面。当鼠标移动时，感应器会连续拍摄鼠标垫表面所成的像，并利用数字信号处理来比较各个影像，以决定移动的距离和方向。产生的结果会传回计算机，而屏幕上的光标会根据这些结果来移动，图中光学感应器、透镜、发光二极管等元件固定在鼠标内。 （1）当发光二极管的光照射在粗糙的鼠标垫上发生 （镜面反射/漫反射）。 （2）光学感应器上所成的像是 （实像/虚像）。 （3）当鼠标向前推移时，感光器件上的像相对于光学感应器在向 移动。 （4）将鼠标离开鼠标垫一定高度后悬空向前移动时，电脑显示器上的光标并不移动，是因为 。
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【简答题】什么是效度? 什么是信度?
【简答题】十九世纪末二十世纪初中国近代考古的大发现主要有（）、（）与（）等。
【单选题】65 Which of the following is referred to as sunk cost:
A.
management reserve
B.
contingency fund
C.
cost budgeted for construction under water
D.
expended funds over which there is no further control
E.
forecasted budget over-runs
【单选题】As for the risks that sellers take under FCA, CPT and CIP terms, which of the following orders is correct?
A.
FCA=CPT=CIP
B.
FCA>CPT>CIP
C.
CIP>CPT>FCA
D.
CPT>CIP>FCA
E.
FCA>CIP>CPT
F.
CIP>FCA>CPT
G.
CPT>FCA>CIP
【多选题】Which 4 of the 7 statements describe the main features of the graph
A.
The number of graduates fell between 1996 and 1998.
B.
The overall rise in numbers was not always steady.
C.
Just under 75,000 male students graduated in 1992.
D.
more women than men graduated between 1992 and 2007.
E.
In 2007, there were nearly 150,000 female graduates.
F.
The gap between the number of male and female graduates widened over the period.
G.
The trends for male and female graduates were similar.
【多选题】Which of the following statements are true?
A.
A typical introduction for a thesis-led essay consists of background statement, thesis statement and outline statement.
B.
Introduction for argument-led essays consists of only background statement and outline statement as the thesis can be put in the conclusion.
C.
The background statement is composed of background information and topic under debate.
D.
The outline statement can sometimes be omitted.
E.
The background information in the background statement can be omitted.
F.
The topic under debate can be omitted.
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