China, which takes pride in inventions in ancient times, has once again shown its____(able) to change the world with its “new four great inventions”: high-speed railways, electronic payments, shared bicycles and online shopping. The “new four great inventions” are all related____China's high-tech innovation(创新)____improved the quality of people's lives. “My wallet is no longer in use. I can buy and eat____I want simply with a tap of my phone,” said Lin Jinlong____overseas Chinese student from Cambodia____(add) that “even pancake sellers are using Alipay (mobile payment). We can also order food at home, which is super convenient. If I____(be) at home in Cambodia, I would have to go outdoors.”

    The bikes themselves are not new, but the operating model of bike-sharing is based on satellite navigation system, mobile payment, big data and other high technologies. It is____(increase) clear that China is innovating and no longer copying Western ideas. This is partly because China skipped over the PC age and went directly to mobile. China has the____(large) mobile use in the world.

    In terms of the “new four great inventions”, Charlie Dai, principal analyst of American market research company Forrester, said, “These products and services____(improve) customer experience so far, improving national and global economy at the same time”.

阅读下文，回答相关问题。

                                                                                                                                    齐王筑城
        齐王一日临朝，顾谓侍臣曰：“吾国介于数强国间，岁苦支备①，今欲调丁壮，筑大城，自东海起，连即墨，经大行，接轩辕，下武关，逶迤四千里，与诸国隔绝。使秦不得窥吾西楚不得窃吾南韩魏不得持吾之左右岂不大利耶?今，百姓筑城，虽有少劳，而异日不复有征戍侵虞之患，可以永逸矣。闻吾下令，孰不欣跃而来耶?艾子对日：今旦大雪，臣趋朝，见路侧有民，裸露僵踣②，望天而歌。臣怪之，问其故。答日：‘大雪应候③，且喜明年人食贱麦，我即今年冻死矣。’正如今日筑城，百姓不知享永逸者当在何人也。
        【注释】①支备：调度战备。支，调度、支付。②踣(b6搏)：跌倒。③应侯：顺应时令。  

我们居住的星球之所以叫地球，你认为理由应该是（　　）

如图两个椭圆分别表示正数集合和整数集合