已知点、,是直线上任意一点,以A、B为焦点的椭圆过点P.记椭圆离心率关于的函数为,那么下列结论正确的是 A.与一一对应 B.函数是增函数 C.函数无最小值,有最大值 D.函数有最小值,无最大值
Listen and choose.(听音,选出你听到的一项)12分 (1)A. gymB. library C. light (2)A. picture B. floorC. wall (3)A. catB. kiteC. hat (4)A. mathB. EnglishC. mouth (5)A. pantsB. jeansC. socks (6)A. hotB. coolC. cold (7)A. pretty B. cheapC. colourful (8)A. goatB. sheepC. donkey
读一读下列单词,选出每组中不同类的单词。14% (1)sheep cheaplambhen (2)eleven thirteen fifteenfresh (3)cloudy sockssunnywarm (4)lunch dinnerbreakfast carrot (5)gymTV roomwashroomboot (6)shoes pantssockswear (7)red colourful greenwhite
听问句,选择答句。10% (1)A. Yes, it is. B. It’s on the first floor. (2)A. It’s yellow. B. It’s 5:00. (3)A. It’s sunny and warm. B. It’s cheap. (4)A. Not much. B. It’s 5 yuan. (5)A. There are 50. B. They’re 50 yuan.
听对话,选出你所听到的单词或时间。10% (1)canteencan’t (2)washroommusic room (3)shirtskirt (4)rainywindy (5)shoesshorts (6)cheapsneakers (7)carrotshorses (8)10:1510:50 (9)6:305:23 (10)8:1011:10
I am 160cm tall, He’s 5cm than me A.tells B.taller C.talk