题目

Science and technology have advanced at such a rate that cloning has now become a reality. The possibility of cloning humans is a serious subject and raises moral questions. In my opinion, cloning is useful for research into cures for disease. However, I think that it needs to be done with warning and carefully controlled by governments. Research into cloning and stem cell (干细胞) production is chiefly aimed at finding new treatments for currently incurable illnesses. While this would improve the quality of life for many, not enough is understood about what effects cloning would have on th10、下列命题中错误的命题是（　　）A、全等三角形对应中线相等B、全等三角形对应角平分线相等C、两边及其一边所对角对应相等的两个三角形不一定是全等三角形D、所有的等边三角形都是全等三角形