读一读，选择正确答句

⑴Does she teach math?____                               A. I am 160 cm tall.

⑵How tall are you?____                                      B. I feel sick.

⑶How do you feel?____                                      C. I went to Xinjiang by bus.

⑷What did you do last weekend?____               D. Yes, she does.

⑸When is your birthday?____                            E. I visited my grandpa.

⑹What day is it today?____                               F. It's Wednesday.

⑺Where did you go yesterday?____                 G. It's on January 1st.

⑻Is she playing the violin now?____                 H. Come in, please.

⑼May I come in?____                                        I. I went to Shanghai

⑽How did you go home yesterday?____          J. Yes, she is.

植物体内水分和无机盐运输的方向和部位是（    ）

1912年，德国科学家魏格纳提出了大陆漂移说，否定了前人的大陆均衡说、陆桥说，却被大多数学者斥为“荒诞的怪论”。20世纪50年代，支持大陆漂移说的新证据越来越多，大陆漂移说重新活跃起来。在此基础上，科学家通过进一步探讨，创立了后来成为主流的海底扩张说和板块构造说。人们对大陆漂移说认识的转变佐证了                            
①认识具有反复性，人们追求真理的过程总是曲折的
②认识具有无限性，人们追求真理是永无止境的过程
③认识具有创新性，认识的进步以推翻已有理论为前提
④认识具有相对性，任何真理性认识都包含着谬误的成分  

已知直线l上有一点O，点A、B同时从O出发，在直线l上分别向左、向右作匀速运动，且A、B的速度比为1：2，设运动时间为ts．

人一出生就开始学习，人的成长离不开学习。以下对学习的看法不正确的是（    ）