题目

阅读理解Whena language dies, so does a unique way of seeing the world. Time is running outfor many tongues. Experts estimate that of the 6,700 or so languages spokenaround the world, 40% could disappear by the end of the century. The UN hasdesignated 2019 the International Year of Indigenous Languages to drawattention to the danger. Slowly, countries are developing more resources to theissue.Canadaaims to pass an Indigenous Language Act before its elections in October 2019.The act would give more than 65 languages spoken by First Nations, Inuit andMetis peoples national recognition and teai是虚数单位，复数=（ ）A．2+iB．2-iC．-2+iD．-2-i