吃西瓜消暑是一件很惬意的事情，西瓜的果实和种子分别是由什么结构发育而来(    )

材料一：让别的国家分割大陆和海洋，而我们德国家满足于蓝色天空的时代已经过去，我们要求阳光下的地盘。

——德国外交大臣皮洛夫

材料二：第二次工业革命后，资本主义国家获得了突飞猛进的发展，生产领域出现了垄断和垄断组织，自由资本主义向着垄断资本主义过渡。主要资本主义国家美、德、英、法、日、俄相继进入帝国主义阶段。

材料三：欧洲变成一只火药桶，只等一粒火星将其引爆。

材料四：第一次世界大战给我带来巨大的生命和财产的损失，我们用泪水和内心的悲愤呼喊，我们需要安宁。

下列符合青春期少年心理特点及变化表述的选项是（    ）

 ①自我意识迅速发展，成人感增强       ②普遍感到孤独，不主动与人交往

 ③内心充满矛盾，情绪情感体验丰富   ④有很强的自制力，做事三思而后行

缺词填空，其中13-15是根据上下文语境根据首字母填单词 
1.More information can be____(可获得的) on the Internet.
2.We all think his ____ (行为) is very strange. We must stop him from doing so.
3.This gift is so expensive that I can't ____(接受) it.
4.Thank you very much for giving me so many useful____ (建议)．
5.I have____(答复)to my penfriend’s letter．
6.Mr Wang is busy____ (解释)everything to us．
7.He often____(吵架)with his parents in the past．
8.____ (原谅)others for their mistakes is a good virtue．
9.Lily told me that she____(宁愿)to listen to music to relax herself．
10.Do you know who ____  (发现) America?  
11.The old man is different from others. He doesn't act ____ ( 正常 ).
12.Peter has had his bicycle ____ (修理).
13.Did you know that colours can i ____ our moods?
14.Who has p____ my bedroorn pink? My father.
15.Lin Tao is very clever，but he never shows off．He is m____ ．