土地资源属于（）。A．可再生资源 B．不可再生源 C．非耗竭性资源 D．耗竭性资源

小儿感冒的主要病因是（）

A.风邪

B.寒邪

C.热邪

D.暑邪

E.湿邪

在窗体上从左到右有Text1、Text2两个文本框（见下图）

要求程序运行时,在Text1中输入1个分数后按回车键,则判断分数合法性,若分数为0—100的1个数,则光标移到Text2中,否则光标不动,并弹出对话框显示"分数错"。下面程序中正确的是【 】

A．Private Sub Text1_KeyPress( KeyAscii As Integer) If KeyAscii=13 Then 回车符的ASCII码是13a=Val(Text1)If a>；0 Or a<=100 ThenText2.SetFocusE1seTextl.SetFocus：MsgBOX("分数错")End IfEnd IfEnd Sub

B．Private Sub Textl_KeyPress(KeyAscii As Integer)If KeyAscii=13 Then 回车符的ASCII码是13a=val(Textl)If a>=0 And a<=100 ThenTextl.SetFocusE1seText2.SetFocus：MsgBOX("分数错")End IfEnd IfEnd Sub

C．Private Sub Textl_KeyPress(KeyAscii As Integer)If KeyAscii=13 Then 回车符的ASCII码是13a=val(Textl)If a<0 And a>100 ThenText2.SetFoeusElseTextl.SetFocus：MsgBOX("分数错")End IfEnd IfEnd Sub

D．Private Sub Text1l一Key Press (Key Ascii As Integer)If KeyAscii=13 Then 回车符的ASCII码是13a=Val(Text1)If a>=0 And a<=100 ThenText2.SetFocusElseText1.Set Focus：Msgbox("分数错")End IfEnd IfEnd Sub

A left-luggage office is a place where bags _______ be left for a short time, especially at a railway station.

A．should

B．can

C．must

D．will

Zhang Ning managed to          her injury to win the Olympic gold medal.

A．prefer

B．overcome

C．injure

D．shock

公共政策研究的全过程都必须进行实证分析。