读下表，分析回答：

（1）我国自然资源方面的基本特点是什么？                                                                                                                                   （2）怎样对待我国人均资源不足的问题？                                                                                                                                                                                                                                                                                                                                （3）我们在报刊上经常读到有关我国自然资源存在危机的文章，这与我们“资源大国”似乎有矛盾，你    对此有何认识？                                                                                                                                   

（4）造成我国人均耕地不断减少的主要原因有哪些?

                                                                                                                                                            

铁饼运动员在投掷铁饼时，为了使铁饼获得更大的速度，通常的上肢姿势是（）

A.肩前屈外展，肘屈曲

B.肩前屈外展，肘伸直

C.肩后伸外展，肘屈曲

D.肩后伸外展，肘伸直

E.肩后伸，肘伸直