单项选择题 3.常规空间造型方法（） ①横向式②纵向式③圆弧式④三角形⑤其他多边形 A. ①②⑤ B. ①②③④ C. ③④⑤ D. ①②③④⑤

未知题型 目前常见的第三方支付包括（）

未知题型 The 'Spanish flu' was the worst plague in history because ______.A.it led to a terrible loss of human lifeB.it was the earliest kind of fluC.it broke out after World War OneD.it infected many animals as well