松树属于裸子植物的依据是（　　）

用动词的适当形式填空。
⑴In class, every student in our class ____  (take) notes carefully
⑵–Do you think whether the book called Harry Porter is worth ____  (read)?  - Yes, of course.
⑶ I called you yesterday afternoon, but you were out. - Oh, I ____ (watch) a football match on the playground.
⑷ Can you hear the two boys ____  (argue) with each other right now?
⑸The person we talked about ____  (visit) our school next week..

如图所示为教材上探究分子运动现象的实验，据此实验，不能得到的结论是（  ）

小明家买电冰箱花了1800元，小红家在商场打折时买了同一款式的冰箱花了1500元，那么小红家比小明家少花了多少钱？

荀况《荀子·王制》中记载：“论百工（评论各种工匠的技术），审时事，辨功苦（精巧与粗劣），尚完利，便备用，使雕琢、文采不敢专造于家，工师（管理工匠的官）之事也。”以上材料主要体现了