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【单选题】
如下图所示,某8086微机系统中有一片8255A,其端口PA接一个8段LED显示器,开关设置的二进制信息由8255A的PB口输入,经过程序转换成对应的8段LED字形码后,由PA口输出,来点亮此LED。根据图中的译码电路,写出8255A的四个端口地址。A.
PA口地址为：200H；PB口地址为：201H；PC口地址为：202H；控制字寄存器地址为：203H
B.
PA口地址为：C8H；PB口地址为：CAH；PC口地址为：CCH；控制字寄存器地址为：CDH
C.
PA口地址为：300H；PB口地址为：301H；PC口地址为：302H；控制字寄存器地址为：303H
D.
PA口地址为：CAH；PB口地址为：C8H；PC口地址为：CDH；控制字寄存器地址为：CCH
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【单选题】Which poem is not written by William?Wordsworth?
A.
To the Cuckoo
B.
To a Highland Girl
C.
My Heart Leaps up
D.
The Rime of the Ancient Mariner
【单选题】Which of the following is not William Shakespeare's tragedy?
A.
Hamlet
B.
As you like it
C.
Macbeth
D.
King Lear
【单选题】Which is not among William Faulkner's major works ?
A.
Cinderella
B.
As I Lay Dying
C.
A Rose for Emily
D.
Light in August
【单选题】Which is the following is not the masterpiece of William Shakespear?
A.
Richard III
B.
King Lear
C.
Othello
D.
Nature
【单选题】Which of the following is Not true about William Shakespeare?
A.
William Shakespeare was born in Stratford-Upon-Avon, England.
B.
In 1599, William Shakespeare built the Globe Theatre in London.
C.
William Shakespeare was only a playwright.
D.
William Shakespeare wrote 154 sonnets in addition to several narrative poems.
【单选题】Which is not among William Shakespeare’s great “Four Tragedies”?
A.
Romeo and Juliet
B.
Othello
C.
Macbeth
D.
King Lear
【单选题】Which of the following is not William Shakespeare's tragedies?
A.
Hamlet
B.
King Lear
C.
Macbeth
D.
As You like it
【简答题】G是中药黄芩的活性成分，具有抗氧化和抗肿瘤的作用，其合成路线为： 请回答下列问题： (1)C生成E为取代反应，则D的结构简式为________，D的核磁共振氢谱中有_______种峰。 (2)B在一定条件下能生成高分子化合物，请写出该反应的化学方程式____________________。 (3)同时符合下列三个条件的B的同分异构体共有_______种。 a．能发生银镜反应；b．苯环上有3个取代...
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