看图读一读填空,把句子代码填在正确的横线上。
A. There's a blackboard in it. There are eighteen desks and eighteen chairs in it.
B. There are three books in it. C. There's a ruler. D. There's a big library.
如图示农田生态系统中两条主要的食物链.如果有人大量捕捉青蛙,短期内对该生态系统造成的影响是( )
阅读上述材料,回答:
小华原本是一个活泼开朗的初三女生,可是,最近几次考试很不理想,这使她变得沉默了,不再愿意与同学、家长交流。
请回答:
读我国“北方地区”图,回答问题。