What kind of food is peanuts: a vegetable, a nut, or a legume? 译句：花生属于哪种...

When did the Global Positioning System (GPS) start to be used? Is it: in...

What kind of water should people drink in order to be healthy? 译句：为了健康，人...

Where was Emoji, commonly used by people on social media, originated? wa...

According to the Oxford English Dictionary, what is the most commonly us...

What was the first food grown in space: potatoes, lettuce, or tomatoes? ...

Who invented the World Wide Web? Was it a) Bill gates, b) Tim Berners-Le...

How big is Mars compared to Earth? Is it bigger, about the same size or ...

Where exactly did the Silk Roads run? Was it a) From South America to Eu...