题目

Here are some tips（建议） on how to stay safe in earthquakes （地震）。 1. Stay inside and duck and cover. Get under a desk or table, or stand in a corner or under a doorway. Cover your head and neck with your arms. 2. Move against a wall if in a high building with no protective desk or table nearby. Cover your head and neck with your arms. 3. Try to get into an open area away from trees, buildings, walls, and power lines （电杆） if outdoors. 4. Pull over （停靠）to the side of the road away from overpasses （天桥） and power lines if driving. Stay in your car until the已知：如图，下列三角形中，AB=AC，则经过三角形的一个顶点的一条直线能够将这个三角形分成两个小等腰三角形的是（　　）A．①③④B．①②③④C．①②④D．①③