单项选择题 （）外部中断 0 允许中断的 C51语句为 ______。 A. RI=1 B. TR0=1 C. IT0=1 D. EX0=1

未知题型 听力原文：W: Good morning, can I help yon?M: Yes, I'm looking for a Christmas present for my girl frienD.W: So you'd like to choose a dress here?M: But I don't know what's in now?W: How about this white dress? It's a new arrival.M: That's nicE.How much does it cost?W: $250.M: Mmm, I think that's a little expensivE.W: How about the red one? It's 20% off, now just $80.M: Great, I think I'll take this onE.(8)A.In a book storE.B.In a hotel.C.In a grocery.D.In a department storE.

单项选择题 解决一对多配送的最短路线问题时通常可采用( )方法。

多项选择题 利润最大化不是企业最优的财务管理日标，其原因有( )

多项选择题 下列表述中，属于固定资产项F{投资特点的有( )

多项选择题 胎盘的作用包括以下哪几项

未知题型 听力原文： Abraham Lincoln was born in a log cabin in Kentucky on February 12, 1809. When he was a small boy, his family moved to file frontier of IndianA.Here, his mother taught him to read and writE.When Lincoln was a young man, his family moved to the new state of Illinois. Lincoln had to earn a living at an early age, but in his leisure time he studied law. He soon became one of the best known lawyers in the state capital at Springfield, Illinois. It was here that Lincoln became famous for his debates with Stephen A.Douglas on the subject of slavery.In 1860, Lincoln was elected President of the United States. He was the candidate of the new Republican Party. This party opposed the creation of new slave states. Soon after his election, some of the Southern states withdrew from the Union and set up the Confederate States of AmericA.This action brought on the terrible Civil War which lasted from 1861 to 1865.On January 1, 1863, during the war, Lincoln issued his famous Emancipation Proclamation. In 1865, after the war ended, the Thirteenth Amendment was added to the Constitution of the United States. This amendment put an end to slavery everywhere in the United States.Early in 1865, the Civil War came to an end with the defeat of the South by the North. Only a few days after the end of the war, Lincoln was shot by an actor named John Wilkes Booth. The President died on April 14, 1865. In his death, the world lost one of the greatest men of all timE.(26)A.In 1809.B.In 1863.C.In 1865.D.In 1860.

未知题型 What does the word 'graduate' (Line 2, ParA.4) mean?A.Finish schooling.B.Change to something elsE.C.CollapsE.D.StanD.

未知题型 在窗体上画一个文本框、一个标签和一个命令按钮，其名称分别为Text1、Label1和 Command1，然后编写如下两个事件过程： Private Sub Command1_Click() strText=InputBox('请输入') Text1.Text=strText End Sub Private Sub Text1_Change() Label1.Caption=Right(Trim(Text1.Text)，4) End Sub 程序运行后，如果在对话框中输入abcdefgh，则在标签中显示的内容是 ______。A.空B.abcdefC.abcdD.efgh

未知题型 在窗体上画一个命令按钮，然后编写如下事件过程： Private Sub Command1_Click() x=0 Do Until x=-1 a=InputBox('请输入a的值') a=Val(A) b=InputBox('请输入b的值') b=Val(B) x=InputBox('请输入x的值') x=Val(x) a=a+b+x Loop Print a End Sub 程序运行后，单击命令按钮，依次在输入对话框中输入10、8、9、2、11、-1，则输出结果为 ______。D.12