阅读理解

    This is my new bedroom. There is a small shelf on the desk. Two end tables are near the bed and a photo is over the bed. The chair is in front of the desk. Look at my shoes. They are under the bed. I clean my bedroom on Sunday. I empty the trash every day. Mom says I'm a helpful boy.

图中，表示南美洲的是（　　）

战国时期封建土地所有制确立的主要途径是(　　)

以下是测量神经纤维膜电位变化情况的示意图，相关叙述错误的是（ ）

若集合M= $\left\{x|-2\le x<2\right\}$,N=$\left\{0,1,2\right\}$,则M$\cap$N=（     ）