唐朝诗人白居易在《钱塘湖春行》中描写到“几处早莺争暖树，谁家春燕啄春泥”，这句诗反映了鸟的（　　）

阅读下面短文，从方框中选出适当的词，并用其正确的形式填空，使短文意思完整。每词限用一次。

   It’s very important for everyone to protect the environment. As a student, I always try my ____  to save energy at home. I turn off ____  when I don’t need them. And I try to save water when I wash the dishes. I don’t ____  bottles or newspaper away because it’s better to recycle them.
   I think everyday activities at home can make a difference to the environment. I feel proud of ____, and I will not only keep saving energy but also advise others to do the same things as me. If everyone cares about ____  the environment, I’m sure we’ll have a better life.

如图所示，在倾角为α的传送带上有质量均为m的三个木块1、2，3，中间均用原长为L，劲度系数为k的轻弹簧连接起来，木块与传送带间的动摩擦因数均为μ，其中木块1被与传送带平行的细线拉住，传送带按图示方向匀速运行，三个木块处于平衡状态．下列结论正确的是（   ）

英汉互译

更强壮的____            funnier____          与......相比较____           tail____ 

think____                 厘米____               小的____                       kilogram____ 

更矮的____               younger____