How does the acculturation theory explain the second language acquisition
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有以下程序: #include<iostream> using namespace std; class Complex public: Complex(dOuble r=0,dOuble i=0):re(r),im(i) doublereal()constreturn re; doubleimag()constreturn im; Complex operator+(Complex c)const return Complex(re+c.re,im+c.im); private: double re,im; ; int main() Complex a=Complex(1,1)+Complex(5); cout<<a.real()<<‘+’<<a.imag()<<‘i’<<endl; return 0; 程序执行后的输出结果是( )。
A. 6+6i
B. 6+1i
C. 1+6i
D. 1+1i
Who sent unmanned spacecrafts to the moon in the 1950s and 1960s
在下面程序的横线处填上适当的内容,使程序执行后的输出结果为ABCD。 #include<iostream.h> using namespace std; class A public:A()cout<<‘A’; ; class B:______ public:B()cout<<‘B’;) ; class C:______ public:C()cout<<‘C’; ; class D:public B,public C public:D()cout<<‘D’; ; void main()D obj;
According to the theory of cognitive psychology, learning must involve organization of ______.