①a>b,c<d⇒a﹣c>b﹣d;
②a>b>0,c<d<0⇒ac>bd;
③a>b>0⇒ a3>b3 ;
④a>b>0⇒ 1a2>1b2 .
生物与非生物的根本区别在于生物具有生命特征。右图说明的生命特征主要是
①好事者____(A.hǎo B.hào) ②船载以入____(A.zǎi B.zài)
③虎大骇____(A.hài B.gāi) ④以为且噬己也____(A.shǐ B.shì)
⑤益狎____(A.xiá B.jiǎ) ⑥大㘎____(A.kǎn B.hǎn)
A.How B. a little C. giraffe D.Where E. cute F. their G. long H. is eating I.animals J. going K. people L. in
There is a zoo near my house. I like ____ there. There are many ____ in it. Look! There is a koala ____ the tree. Isn’t he ____ ? Under the tree, there is a ____ . Her neck(脖子) is so long. She is a lovely girl. ____ is the panada? She is eating the bamboo(竹子). She's ____ shy. But the elephant is interesting. He is playing with kids with his____ nose. They are very funny. Look! In the pool, there are two dolphins. They are playing with ____ balls. ____ happy they are !