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只要理解作品的立意，便可开口朗诵。( )

A. 对
B. 错

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A．musicB．plasticC．oceanD．public

普通话中有四个声调：阴平、阳平、上声和去声。( )

A. 对
B. 错

I am 15. Now I’m studying English in London. I want to invent a language machine that can help me understand as many languages as possible.Marie, FranceI am 13. I dream of going to a top university after I graduate. I want to be a reporter in the future.Michiko, JapanI am a 16 year-old girl in Tibet(西藏). The Qinghai Tibet Railway has been built. I’ll be able to reach Beijing by train in about 48 hours. My dream is to go to Beijing to watch the 2008 Olympic Games.Joma, ChinaI am a 12 year-old girl. I like traveling very much. How I wish to visit Egypt someday!Masha, RussiaI am 14 years old. I dream of inventing a machine that can send things or people from one place to another in a minute.Andrew, the USA The best title(题目)for this passage would be“______”． [A] I have a dream [B] Different students from different countries [C] Five middle school students

使用VC6打开考生文件夹下的工程test37_3。此工程包含一个test37_3.cpp，其中定义了类Letter和Number以及Grid，其中Grid类由Letter类和Number类public派生，但三个类的定义并不完整。请按要求完成下列操作，将程序补充完整。 (1)添加类Letter的带一个参数c的构造函数，c是char型的数据，默认值为’A’，该函数把参数c的值赋给类的保护成员ch，请在注释“//1”之后添加适当的语句。 (2)添加类Number的带一个参数n的构造函数，n是int型的数据，默认值为0，该函数把参数n的值赋给类的保护成员num，请在注释“//2”之后添加适当的语句。 (3)添加派生类Grid构造函数的定义，传入的参数为char型的c和血型的n，并将其分别赋值给基类的ch和num，请在注释“//3”之后添加适当的语句。 (4)完成派生类Grid的友元函数——“＜＜”运算符重载的定义，使其以格式“[g.ch，g.num]”输出，请在注释“//4 ”之后添加适当的语句。源程序文件test37_3.cpp清单如下： #include＜iost ream. h＞ class Letter { protected: char ch; public: // 1 }; class Number { protected: int num; public: // 2 }; class Grid : public Letter, public Number { public: // 3 friend ostream& operator＜＜(ostream &o,Grid &g); }; // 4 { o ＜＜ "[" ＜＜ g.ch ＜＜ ", "＜＜ g.num ＜＜ "]"; return o; } int main ( ) { Grid g(’C’, 3); cout ＜＜ "Grid reference: "＜＜ g ＜＜ end1; return 0; }