已知直线l1：3mx+（m+2）y+1=0，直线l2：（m﹣2）x+（m+2）y+2=0，且l1∥l2，则m的值为（ ）
如图,将一个长为10cm,宽为8cm的矩形纸片横向对折,再纵向对折后,沿所得矩形两邻边中点的连线(虚线)剪下,再打开,得到的图形的面积为( )
Last week our class went to the zoo as part of our science project. We spent a few hours1there. We didn't do much studying. We just had a good 2 . We left for the zoo by bus at 9:00 and 3 at the zoo half an hour later. There are all kinds of 4 in the zoo. And the animals have many good 5 for us. We all wanted to watch the elephant show at 10:00. But before that we went to look at snakes because it was a part of our project. I don't like snakes because they are so 6. The elephant show lasted 45 minutes. It was really nice. I didn't know elephants can play soccer so 7! Then we had a 15-minute break for a drink, we went 8 the zoo trying to see as many animals as we could before 9. Lunch was fun because we had it 10 monkeys. We went back on the bus at 2:00. It took 30 minutes to get back to school.
人的双眼皮是显性，单眼皮是隐性，现有一对夫妇，都是单眼皮，他们生的子女应该（ ）
【环境保护】2015年3月31日，甘肃敦煌遭遇强沙尘暴袭击，能见度不足20米。世界文化遗产莫高窟暂时关门谢客。下图为敦煌近30年平均沙尘暴四季分布比例图。读图回答下列问题。
