两个质数的积一定是合数．______．
两个质数相乘得到的积，除了1和它本身外，还有这两个质数是它的因数．它有4个因数，所以一定是合数．
故答案为：√．
新产品定价策略包括速取策略，（）等方法。
Look at the beautiful big house over there! It is said to _____ an old Japanese woman. [ ]
A. belonging to
B. be belonged to
C. belong to
D. be belonging to
