1) what is this? a) oesophagus b) stomach c) liver d) small intestine e) large intestine f) rectum 2) what is this? a) rectum b) oesophagus c) gallbladder d) intestine e) stomach f) liver 3) how rectum work? a) make an stool b) make food to smaller piece c) give the stool go out side 4) what part of body make your brain know now need to use the bathroom? a) rectum b) anus

science

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？