Can you imagine waking up each day in a house that is {#blank#}1{#/blank#} (gentle) rocked by the movement of water? Well, for some people this vision of the future may become a reality.

    It is a commonly accepted fact that {#blank#}2{#/blank#} the Earth's temperature rises, the ice caps at the North and South Poles will melt, {#blank#}3{#/blank#} (cause) the sea level to rise.

    So, where does this leave the many countries in the world {#blank#}4{#/blank#}have large sections of their populations living in areas which lie at or below sea level? The Netherlands, for example, is one of {#blank#}5{#/blank#} most highly populated, low-lying countries and {#blank#}6{#/blank#} (battle) with the problem of flooding for years. Further rises in the sea level would result in much of the country disappearing under water.

    Inventive architects may have come up with a {#blank#}7{#/blank#} (solve) to the problem: a house actually built on the water. The basic idea is that houses will have a base {#blank#}8{#/blank#} (fill) with air and a way of anchoring(使固定) them to the ground. This will allow the house {#blank#}9{#/blank#} (move) upwards whenever the sea level rises and sink back down when the sea level drops. So, will {#blank#}10{#/blank#} (float) houses be the homes of the future? For some people there may be no alternative.

    April Fool's day is a day {#blank#}1{#/blank#} people can play jokes on others. No one knows for sure how this holiday began. Some English people hold the {#blank#}2{#/blank#} (believe) that it began on the day during the 1200s. At that time, King John of England was in {#blank#}3{#/blank#} habit of making a road out of nearly every path he walked regularly. The citizens of one farm village were aware of this. To protect their grass and farms from being destroyed, they built a fence that prevented the king from walking through their countryside. The king sent a group of soldiers to inform the villagers to remove the fence. {#blank#}4{#/blank#} hearing that, however, the villagers developed a plan of their own. When the soldiers arrived, the villagers ran around and shouted wildly with things {#blank#}5{#/blank#} (throw) away everywhere, behaving as if they {#blank#}6{#/blank#}(go) mad. The soldiers reported to the king that they were so mad as to be beyond punishment. The villagers saved their farmland {#blank#}7{#/blank#} (success) by tricking the king. Now April's day {#blank#}8{#/blank#} (remain) in fashion, {#blank#}9{#/blank#} the tradition only allows tricks from midnight to noon on April 1st. Those who try to play tricks in the afternoon act as {#blank#}10{#/blank#}(fool) themselves and are usually laughed at.