【正确答案】正确答案：a. The tiger initially appears as a strikingly sensuous image. However, as the poem progresses, it takes on a symbolic character, and comes to embody the spiritual and moral problem the poem explores: perfectly beautiful and yet perfectly destructive. Blake" s tiger becomes the symbolic center for an investigation into the presence of evil in the world. b. Although tiger induces the pain, unrest and even separation of the society, it can release the creativity of human beings. The tiger can be seen as the embodiment of power and vigor, which resembles the flame burning at the bottom of human" s heart. The tiger not only creates but also destroys. It owns a "fearful symmetry" , connoting a startling power and a pervading terror.