如图为歼﹣15“飞鲨”战机在“辽宁”舰航母上成功着舰，这对于提高中国海军综合作战力量具有重要意义。那么中国海军最早兴建于什么时期呢？（    ）

与“甘瓜苦蒂，天下物无全美”意思相近的词语是(    )。

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      Do you need friends? I'm sure your answer is "Yes, of course. Everybody does! "You need friends when you play and when you work. If you have friends, you will feel happy. If you have no friends, you will feel lonely.

      Do you know how to make friends? There is only one good way—You make friends by being friendly.

      A friendly person is interested in other people. He is always helpful. If you want to make friends with a new classmate, you can talk with him, tell him about the other classmates in your class and try your best to be helpful to him.