题目

原核生物、真核生物、病毒的遗传物质依次是(     ) ①DNA     ②RNA     ③DNA和RNA     ④DNA或RNA． A．①②③ B．④④④ C．③③④ D．①①④ 答案：DⅡ.完形填空(共10小题；每小题2分，满分20分) Hello,my name is Zhang Dan. I live in 11 small village in Yunnan. The 12 here is great. Itisn’t too hot in summer. And it isn’t too cold in win- ter,13 .        It's always sunny. I 14 living here. The village is a 15      place,so many people come to 16 it every year. There is a 17 in my village and the water in it is very 18 And I often —drink it.I'm walking in the village now. Look!A woman is taking a photo 19 a little girl. Two boys are reading books. Who is 20 in the square (广场) ？Oh,it's Wang Fang. She dances well. The life here is very relaxing,isn’t it?() 11. A. a   B. an   C. the   D. /() 12. A. food   B. weather    C. life   D. water() 13. A. still   B. also   C. either   D. too() 14. A. like   B. don't like    C. remember   D. don't remember () 15. A. scary   B. beautiful    C. noisy   D. funny() 16. A. watch   B. meet    C. visit   D. look () 17. A. river   B. library   C. mountain   D. shop.() 18. A. dirty   B. clean    C. hot   D. cold() 19. A. on   B. in   C. of   D. at.() 20. A. singing   B. dancing   C. running   D. playing