He did come to my class every week,but his eyes（）he wasn’t interested in the subject.
A. suggested
B. expressed
C. explained
D. insisted
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— Our family is going to Taiwan Island this coming holiday.— （）.
A. It’s a piece of cake
B. Take it easy
C. It depends
D. Have fun
在面向对象方法中，下列说法正确的是（）
A. 对象是类的抽象，子类是对象的实例
B. 类是对象的抽象，超类是子类的实例
C. 对象是类的实例，子类是超类的抽象
D. 类是对象的抽象，超类是子类的抽象
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