（1）When people think of tigers，they think they're strong and dangerous．Especially now there is some news about tigers eating people．But in fact，（2）老虎們正處于極大的危險(xiǎn)之中。
    Once（曾經(jīng)）（3）世界上只有八種老虎，but three died out during the 20^th century．The Siberian tiger（東北虎）almost died out completely．If the government doesn't make any efforts（努力），it's quite possible that there will be no more Siberian tigers in China in ten to twenty years．
    （4）To double the number of tigers，Chinese people make many efforts．Also，the World Wildlife Fund（世界野生動(dòng)物基金會(huì)）has started a program recently．It aims to save wild tigers and put an end to tiger hunting and killing．China，together with twelve other countries，has joined in．
    Wild animals，such as red deer and wild pigs，are the main food of the tigers．The hunting of these animals is the greatest threat（威脅）to tigers．So the most important thing is to save the animals that tigers eat．To protect the wild tigers，（5）we need to call on more people to stop eating wild animals．

（1）

在人們眼里，老虎是強(qiáng)壯而危險(xiǎn)的。

在人們眼里，老虎是強(qiáng)壯而危險(xiǎn)的。

（2）

Tigers are in great danger.

Tigers are in great danger.

（3）

There were eight kinds of tigers in the world.

There were eight kinds of tigers in the world.

（4）

為了使老虎數(shù)量增加一倍，中國人做出了許多努力。

為了使老虎數(shù)量增加一倍，中國人做出了許多努力。

（5）

我們需要呼吁更多的人停止食用野生動(dòng)物。

我們需要呼吁更多的人停止食用野生動(dòng)物。