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（请给出正确答案）
A.编译时正确，但运行时错误
B.将构造一个Student对象
C.表达式是错误的
D.表达式是合法的
答案
BD
更多“类Teacher和Student是类Person的子类：Person p;Teacher t;Student s;//p,t ,s 都不为空if（t instanceof Person） {s=（St…”相关的问题
第1题
A.编译时正确，但运行时错误
B.将构造一个Student对象
C.表达式是错误的
D.表达式是合法的
第2题
A.What time is it
B.What day is today
C.How long will it last
D.How often
第3题
Janet, ______was read by the teacher, is a top student in our class.
A．the composition of hers
B．the composition of whom
C．her composition
D．whose composition
第6题
Student: I'm nervous.
Teacher:______. Betty, you'll finish it quickly.
第7题
A.What day is today
B.How are you today
C.What is the date today
D.What is today
第8题
Which of the following is TRUE of teacher’s correction of his student’s writing errors？ ()
A．It is good to correct all the errors
B．A teacher should write something on the papers to encourage his students
C．A teacher’s handwriting must be tidy and clear
D．A teacher had better point out the way for each student to improve his writing
第9题
From the text we call infer that the writer is most likely to be a____
A．schoolboy
B．school teacher
C．schoolgirl
D．college student
第11题
Many a student ______ the usage of the word since the teacher explained it last time.
A．have grasped
B．grasped
C．had grasped
D．has grasped
