Many people today like reading stories about UFO.Many people in different countries are studying the UFO.

    There are some different saying for UFO.Among those sayings,the most popular one for UFO is that UFOs are strange creatures(生物) to the earth from other stars.We can call them aliens.

    UFO scientists and many people believed this saying.Some people said that they saw a few UFOs landing on the earth.They seemed to be objects rather like big plates.Some people said that they saw some strange visitors coming out of the UFOs.

    Some people make mistakes when they say they have seen UFOs high in the sky.Perhaps they see a weather balloon or an uncommon plane or the light they see in the sky comes from the ground.Sometimes they see the light from the moon.

    But these are a lot of others we can't understand.It may take many years to find a clear answer and then people will give UFO another name.

下列国家与我国既陆上相邻、又隔海相望的是(    )

在下面一段文字横线处补写恰当的语句，使整段文字语意完整连贯，内容贴切，逻辑严密，不得抄袭材料。每处不超过15个字。

    空白手法是中国传统绘画艺术中一种常见的表现手法。如八大山人画的鱼，齐白石画的对虾，纸上别无他物，但我们却能感到满眼碧波，这就是 ____。我国的古典诗词中也有许多这样的例子，读者在鉴赏中 ______，从而获得审美的体验。如贾岛的《寻隐者不遇》：“松下问童子，言师采药去，只在此山中，云深不知处。”实写作者和童子的对话，而诗人“问”的内容省去了，隐者是什么样子的也没有介绍，但我们可以想像得出隐者出没于高山云海之中，濯足于山涧小溪之旁……这种以实写虚的表现手法，也可以称之为 ______。