根据短文内容及首字母提示完成短文。

Round eyes, round head, round ears, round body! What is this lovely little animal? He looks l  1 a bear. But he is not a bear. He is a KOALA(考拉).

People in Australia love koalas and take care of t  2 .They have set up places for koalas to live s  3 . No one can kill them for their pretty fur. When a koala is b  4 ,he has no fur. And he is not as big as your little toe! The mother koala has a pocket in the front of her b  5 . The baby goes into this warm pocket. There he stays for six m  6 .

The koala could not live w  7  a special kind of tree. The tree gives him both his home and his food. For most of the day the koala s  8  in the tree. At night the koala looks for food. He may go miles to find it. He likes eating only the bark (树皮) and the l  9 of the trees. He eats n  10  else. And he eats more than two pounds each night!

How lovely the koalas really are!

能源危机让生物能源“热值陡升”作为一个石油净进口国，随着国际油价高涨，大量进口石油已对我国的能源安全构成威胁．生物柴油是以果实、种子、植物油或动物脂肪、废弃的食物油等为原料，经酯交换反应制得的脂肪酸单烷基酯．下列关于生物柴油的叙述不合理的是（　　）

A．生物柴油具有一些明显优势，其含硫量低，可减少二氧化硫和硫化物的排放

B．生物柴油具有较好的润滑性能，可以降低喷油泵、发动机缸体和连杆的磨损，延长其使用寿命

C．生物物柴油具有良好的燃料性能，但是在运输、储存、使用等方面的安全性均差于普通柴油

D．生物柴油是一种可再生能源，也是一种降解性较高的能源