设一个栈的输入序列为A，B，C，D，则借助一个栈所得到的输出序列不可能是______

阅读下面短文,根据以下提示:1)汉语提示,2)首字母提示,3)语境提示,在每个空格内填入一个适当的单词,并将该词完整地写在右边相对应的横线上. 所填单词要求意义准确,拼写正确.

An American best-seller has been popular among the students in our

School_______(最近)．It is so inspiring that I would like             76._____

to recommend it to you．This book，Chicken Soup for the Soul,

w       by Jack   Canfield                                77.______                                                          first appeared______1993 and soon became a best-seller．           78.______

It will surely inspire readers of all______(年龄)．                  79.______

It has been put into many languages，spreading love to

all over the world. B     ，an English     version                80._____    

is of g ___  help to us English learners as it will help               81.____

improve our English．It costs 64 yuan, ______you can get            82.____

it for 54.4 yuan through online shopping，which will__ (节省)        83.____

you 9.6 yuan．You can order it at www.dangdang.com，and g ___      84.____   

the book within one week after   your payment．

For more ______please visit the website．                         85.______

制备窝洞时，腐质去尽未发现露髓，在修整洞形后，髓角处有一红点，轻探剧痛，应判断为

A．腐质未去尽
B．意外穿髓孔
C．龋坏穿髓孔
D．有色素沉着
E．以上都不是

压力容器维护保养的目的是（）。

窗体上有两个按钮，则执行程序后按键盘Cancel键的输出结果是【 】。　　Private Sub Command1 _ Click( )　　　　Print"北京"； 　　End Sub　　Private Sub Command2 _ Click( )　　　　Print"南京"；　　End Sub　　Private Sub Form _ Load( )　　　　Command2．Cancel＝True　　　　Command1．Cancel=True　　End Sub

1938年，德国人（）在用慢中子轰击铀核时，首次发现了原子核的裂变现象，并放出新的中子。

A.哈恩

B.查德威克

C.卢瑟福

D.麦克斯韦