题目

（04江苏卷）让杂合高茎豌豆自交，后代中出现高茎和矮茎两种豌豆，且两者的比例大约为3∶1，这种现象在遗传学上称为                                                                          A．性状分离            B．诱发突变              C．染色体变异         D．自然突变Jackie Chan is famous ______ an actor. I like his film _________ The New Police Story.A. for, called B. as, calledC. for, is called D. as, is called