Fire can____ down a lot of trees. It can____ people, too. We must be____with fire. We mustn't____ in the forest. We mustn't play____ fires at home. We mustn't play with matches either.
馨怡同学在“探究浮力大小与什么有关”时,做了如下图所示的实验,根据要求完成下列问题:
下列有关激素的叙述中,不正确的是( ).
仙人掌能够生活在沙漠,企鹅能够生活在南极冰原,这是生物____的具体表现。蚯蚓能够改良土壤,地衣能够加速岩石的风化,促进地球____的形成,这是生物能够____的具体表现。
根据问句找出相应的答句
____ Is there a river in the nature park? A. Yes, I do.
____ Do you like the nature park? B. Yes, there is.
____ What colour is the bridge? C. No, there aren't.
____ Let's go to the nature park. D. It's green.
____ Are there any fish in the river? E. Good idea!
下列各句中,没有语病、句意明确的一句是( )