We know that the zero does not countas a node, if per se I actually had managed to hit zero in drawing that, the correct answer would be the bottom one there.
我们知道0不能算作一个节点，如果我确实把零点画成了0，那正确的答案应该是下面的那个。
3
My chairperson told me that if I did independent field research in addition to the assigned work in each course; they would countas intermediate-level courses.