题目

如果三点A(1,5,-2)、B（2，4，1）、C（a，3，b+2）在同一条直线上，那么( )A.a=3，b=-3B.a=6，b=-1C.a=3，b=2D.a=-2，b=1 答案：C根据中文及句意提示，写出单词。1. Beijing zoo ___ (有) many animals.2. His brother comes from ________( 非洲).3. That man is my __________ (英语) teacher.4. How many ___________(camel) are there in the zoo ?5. W_________ you like to see Lingling?6. W_______ to Beijing Zoo.