There are few places on earth where nature can be seen in almost primitive (原始的) condition. One is the Galapagos Islands, where largely strange and unusual birds, animals and plants live and g
As the world watched the twin towers of the World Trade Center come under attack,a common phrase was repeated:“It looks like a movie.” 1 The attack destroyed one of the world’s highes
中，
＝3，
＝4，
＝5,则
的值是（ ）
B．
C．
D．
