某同学在用光学显微镜“观察洋葱根尖分生组织细胞的有丝分裂”实验中，可观察到的现象是（ ）

     I think the best place to go on Sunday is the zoo. When you are 1, you can go there with your family. 2the zoo, there are many animals: elephants, deer,3, rabbits and other animals. Elephants are the 4 animals on land. I 5there is a baby elephant in our zoo. So I want to6at it. Yu Xuan wants to go with me. She says, " 7we go there together?" "Sure!" I say. "We can 8 a good time there. But let's 9 there at half past four. I have 10 homework to do."

某片果园有果树80棵，现准备多种一些果树提高果园产量，但是如果多种树，那么树之间的距离和每棵树所受光照就会减少，单棵树的产量随之降低．若该果园每棵果树产果y（千克），增种果树x（棵），它们之间的函数关系如图所示．

甲午战败后，李鸿章非常伤感地说：“练兵也，海军也，都是纸糊的老虎……不过勉强涂饰，虚有其表。”对这句话的理解最为恰当的是(    )