题目

阅读理解。ALearning to speak English well may be the best thing you can do to improve your life. That’s right. If you can communicate in English, you can do the following things:Contact (联系) people from all over the world. Talk about your ideas and opinions on Internet discussion groups. Send e-mails to interesting people. Learn about their life and culture.Travel more easily. Communicate with people wherever you go?English is spoken in more than 100 countries. Ask directions, have a conversation, or ask for help. Maybe English will save your life some day!Push your career forward. 18．如图所示，是六个棱长为1的立方块组成的一个几何体，其左视图的面积是（　　）A．6B．5C．4D．3