下面不属于价值型股票的是()。
A.周期型股票
B.蓝筹股票
C.防御型股票
D.逆势型股票
参考答案:A
With the development of science, more new technology to the field of IT.
A.has introduced
B.is being introduced
C.is introduced
D.was introduced
一个平行四边形的面积是5m2,如果把它的底和高都扩大到原来的2倍,得到的平行四边形的面积是______m2.