在草地上，用脚踢足球，球由于_____________而沿草地向前运动，但又由于

It has always been the _____ of our goverment to encourage graduates to start their business.   

A．plan

B．campaign

C．procedure

D．policy

计算：x³· x ^—3  = ______；a ⁶÷a²·a³ =___________；2 ⁰ + 2^—1 =___  ___.

—I have ______ to tell you. Please come to my office at lunch time.

—What's it? Tell me now, please! [ ]

A. something important

B. important something

C. anything important

D. important anything

在窗体上画一个命令按钮，其名称为Command1，然后编写如下事件过程：Private Sub Command1_Click() Dim a1(4, 4), a2(4, 4)Dim i As Integer, j As IntegerFor i = 1 To 4For j = 1 To 4 a1(i, j) = i + j a2(i, j) = a1(i, j) + i + jNext j Next i Print a1(3, 3); a2(3, 3) End Sub程序运行后，单击命令按钮，在窗体上输出的是______。

A．66

B．105

C．721

D．612

全麻术后未清醒的病人采用去枕仰卧位的目的是

A．防止呕吐物流入气管

B．防止颅内压降低

C．有利于静脉回流

D．减轻伤口疼痛

E．减少局部出血