题目

茎输导有机物的结构是，输导水分和无机盐的结构是 A．髓  B．导管 C．筛管  D．树皮． 答案：C；B听录音，判断正“√”误“×”。(     ) 1. What does your father do?  He's a teacher.(     ) 2. What are you going to be?  I am going to be a TV reporter.(     ) 3. What does your mother do?  She's a singer.(     ) 4. Who's she?  She's my mother.(     ) 5. He teaches English.