下列说法正确的是(  )   

①价值判断与选择往往因人而异

②追求真理是一个永无止境的过程

③人的认识往往受主观条件制约

④人们不断检验和发展真理性认识

下图是工业上制备氢气的微观示意图，其中不同的“球”代表不同的原子。下列说法不正确的是（  ）

From:    annel@freemai14all.com    Sent: Wed., Oct. 19

To:      tss_liam@kidstarmail.net

Subject: Hello!

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Hi, Liam!

      So you're my new pen friend. Let me tell you a bit about myself. I'm 14 years old and I live in Calgary, CanadaI have two older brothers, Brian and Sam. I'm the only girl.

      I love sports and I'm always looking for exciting new hobbies to try. I like playing baseball in winter.

      It's fun beating the boys! But summer is my favourite time of the year. I love skateboarding and rock climbing in summer.

     Skateboarding's great because it's so fun and easy to learn! I often skateboard after school. There are many placesin the park where I can do stunts. I'm good at stunts like jumping and turning the skateboard!

     Rock climbing is also really fun. I usually climb with my dad on weekends. We can't do it on real mountains very often because we live in the city. We do indoor rock climbing instead but it's not as challenging.

    So that's me! How about you? Please write back soon!

Bye for now!

Anne