在以下关于人类起源和发展的说法中，正确的是（　　）

    Here is a picture. It is a picture of my  1  This is my 2. My quilt is on it. Two baseballs are under it. They are white 3. Look at my desk. A4is on it. I like computer games. A 5is on it, too. It's 9:00. My 6is in my schoolbag and two7are in it. My books are8the floor. My keys are in the desk.9is my ID card? Do you10? Oh, it's in my English book. I like my room. It's nice.

（2016•广西）如图为中国局部地区示意图，读图，②所在地理区域的主要粮食作物是（  ）

某同学在显微镜下观察小鱼尾鳍内血液流动情况时，绘出血管简图如图所示，请同学对于三种血管的判断正确的是（    ）