实现民族团结和国家统一的文化基础是（  ）

“我很爱戴我的老师，但有时又害怕我的老师；我有许多话想和老师说，但又不敢说。”这是一些同学内心的矛盾，对此，你的建议是 （   ）

结合材料，运用所学知识回答问题：

材料：“墨子号”成功发射。2016年8月16日1时40分，我国在酒泉卫星发射中心用“长征二号丁”运载火箭成功将世界首颗量子科学实验卫星“墨子号”发射升空。这使我国在世界上首次实现卫星和地面之间的儿量子通信，构建天地一体化的量子保密通信与科学实验体系。

    “长征五号”运载火箭成功发射。2016年11月3日20时43分，我国首枚大型运载火箭“长征五号”在海南文昌航天发射场发射成功，标志着中国正式迈入拥有大型运载火箭国家的行列，空间进入能力获得大幅提升。

根据短文理解，从A、B、C三个选项中选择最佳答案填空。

    Ebola (埃博拉) is a river in Africa. In 1976, a 1 virus (病毒) was found there. The virus can cause people to get very sick and even 2. So people call the virus Ebola.

    Last year Ebola caused the worst problem in western Africa, and 3 spread very quickly. Medical experts all over the world did their best to stop Ebola and to treat the people who were sick.

    Ebola 4 starts with fever and headache, kind of like the flu. But it can get worse and cause serious bleeding and 5 problems. It's very important tor infected (受感染的) people to get treatment right away. People who have Ebola need to be cared for in a special way 6 the illness doesn't spread to doctors, nurses or others in their families.        

    Doctors aren't sure how the 7 person got Ebola, but they think people picked up the virus from infected animals. People can get the virus by touching an infected person's drops of 8. But Ebola doesn't spread through food or water like some viruses 9. It also doesn't travel through the air like cold or flu viruses do. In areas where the Ebola virus is, anyone who doesn't feel 10 should get medical held immediately.