【单选题】【消耗次数：1】
如果没有显式定义构造函数（包括复制构造函数），C++编译器就（）
①
出现编译错误
②
没有构造函数
③
必须显示定义
④
隐式定义默认的构造函数
参考答案：
复制
纠错
相关题目
【单选题】
如果没有为一个类定义任何构造函数的情况下，下列描述正确的是（ ）
①
编译器总是自动创建一个不带参数的构造函数
②
这个类没有构造函数
③
这个类不需要构造函数
④
该类不能通过编译
【单选题】
如果没有为一个类定义任何构造函数的情况下，下列描述正确的是（ ）
①
编译器总是自动创建一个不带参数的构造函数
②
这个类没有构造函数
③
这个类不需要构造函数
④
该类不能通过编译
【单选题】
以下关于构造函数的描述错误的是（ ）。
①
构造函数的返回类型只能是void型。
②
构造函数是类的一种特殊函数，它的方法名必须与类名相同。
③
构造函数的主要作用是完成对类的对象的初始化工作。
④
一般在创建新对象时，系统会自动调用构造函数。
随机题目
【单选题】
What are two grammar practice activities?
①
Mechanical practice and meaningful practice
②
Volume practice and communicative practice
③
Interest practice and meaningful practice
④
Mechanical practice and success oriented practice.
【单选题】
What are two broad categories of knowledge?
①
Implicit knowledge and explicit knowledge
②
Obvious knowledge and unobvious knowledge
③
Inductive knowledge and deductive knowledge
④
Refereed knowledge and inferred knowledge.
【单选题】
Which of the following steps are typical for the deductive grammar teaching method?
①
Give examples→explain rules→students do practice activities
②
Authentic language data is provided→induces learners to realize grammar rules→apply the new structure to produce sentences (the inductive method)
③
Explicit rules are give to students→Authentic language data is provided→apply the new structure to produce sentences (the guided discovery method)
④
All of the above.
【单选题】
Which of the following statement is not true?
①
Grammatical competence is essential for communication
②
There is a positive role of instruction for grammar learning
③
Grammar teaching can enhance learner proficiency
④
Grammar learning is completely useless for children.
【单选题】
Which of the following is not grammar presentation method?
①
Deductive method
②
Inductive method
③
Guided discovery method
④
Communicative teaching method.
【单选题】
What is the realistic goal of teaching pronunciation?
①
Consistency
②
Intellegibility
③
Communicative efficiency
④
All of the above.
【单选题】
Which type does the following production practice belong to? She sells sea shells on the seashore.
①
Make up sentences
②
Using meaningful context
③
Using pictures
④
Using tongue twisters.
【单选题】
Which type does the following production practice belong to? The students repeat what the teacher says. This activity can practice individual sounds, individual words, groups of words, and sentences.
①
Listen and repeat
②
Fill in the blanks
③
Make up sentences
④
Using meaningful context
【单选题】
What does the falling intonation on the question “where do you live ?” indicate?
①
I am telling you something you do not know
②
I have not finished yet
③
I am asking a genuine question
④
I know you have told me before.
【单选题】
What is reflected as important in the following example? A. Would you please turn down the radio a little bit? B. Sorry. ↘ （no, I do not want to.） Or B. Sorry? ↗ （what did you say?）
①
Stress
②
Intonation
③
Sounds
④
Pitch Part