【单选题】如果有一个类MyFrame是Frame的子类,但它不能被实例化,请写出该类的声明头为( )。
A.
abstract class Frame. extends MyFrame
B.
abstract class MyFrame. extends Frame
C.
class MyFrame. abstract extends Frame
D.
class Frame. abstract extends MyFrame
【单选题】It’s the third time that Li Ming has been to Xi’an , _______?
【简答题】根据所给表格仿照例子写句子。 Today is June third. This is Li Ming's day. Now it is June fourth. What did Li Ming do yesterday? 例: He walked to school at eight thirty on June third. 1. He ______to Miss Zhang at _...
【单选题】如果有一个类MyFrame 是Frame 的子类,但它不能被实例化,请写出该类的声明头为()
A.
class MyFrame abstract extends Frame
B.
abstract class MyFrame extends Frame
C.
abstract class Frame extends MyFrame
D.
class Frame abstract extends MyFrame
【单选题】_____ Ming Ming with his sister, I find Ming Ming prefers classical music to pop music.
【简答题】Ming: Hello, is that you, Tony? This is Xiao Ming speaking.Tony: Hi, Xiao Ming, ______.
【简答题】如果有一个类MyFrame是Frame的子类,能够被不同包中的类所使用,请写出该类的声明头:【 】。
【单选题】如果有一个类MyFrame是Frame的子类,但它不能被实例化,该类的声明头是( )。
A.
abstract class Frame extends MyFrame
B.
abstract class MyFrame extends Frame
C.
final class MyFrame extends Frame
D.
class Frame abstract extends MyFrame