判断题强调广告活动与助销活动的立体组合，才能相得益彰，发挥更独到的作用。A 对B 错

网络运营者应当采取（）措施和其他（）措施，确保其收集的个人信息安全，防止信息泄露、毁损、丢失。

人民法院接到原告诉状，经审查，符合起诉条件的，应在7日内立案受理。

用万用表测量三极管中每二个极间正反向电阻，其中正反向电阻相差较小的这一组中的两个电极是集电极与发射极。

正确有效地开展新闻工作和新闻作品研究的理论基础是（）。

拥有所有权优势的企业，当市场发展完善时，其内部化动机就会增强。

只有教师工作快乐，才能带给学生学习的（）；只有教师健康发展，才能培养出健康发展的（）。

Most people have no idea of the hard work and worry that gointothe collecting of those fascinating birds and animals that they pay to see in the zoo.One of the questions that is always asked of me is 1 I became an animal collector in the first 2.The answer is that I have always been interested in animals and zoos.According to my parents, the first word I was able to say with any 3 was not the conventional “mamma” or “daddy”,4 the word “zoo”, which I would 5 over and over again with a shrill 6 until someone, ingroupsto 7 me up, would take me to the zoo.When I 8 a little older, we lived in Greece and I had a great 9 of pets, ranging from owls to seahorses, and I spent all my spare time 10 the countryside in search of fresh specimens to 11 to my collection of pets.12 on I went for a year to the City Zoo, as a student 13 , to get experience of the large animals, such as lions, bears, bison and ostriches,14 were not easy to keep at home.When I left, I 15 had enough money of my own to be able to 16 my first trip and I have been going 17 ever since then.Though a collector's job is not an easy one and is full of 18 ,it is certainly a job which will appeal 19 all those who love animals and 20. 请在19处填上正确答案（）

下列选项中，没有可替换语法的是（）。

使用ping命令时，参数（）指定要做多少次ping。

树形目录结构的主文件目录称为（）。