【简答题】阅读理解。 Jim likes playing in a river, But there isn't a river near his new house. He isn't very happy. One day, he asks his mother,'Is there a river near here?' 'No, there isn't.' his mother says,'But o...
【单选题】Background:The chief officer and bosun is talking about something, at this time, the captain goes to bridge. S1:Morning, Chief.S2:Morning, captain.S1:What are you talking about?S2:We are talking a...
【简答题】let arr=['a', 'b'] for (let index of arr.keys()) { console.log(index); } for (let elem of arr.values()) { console.log(elem); } for (let [index, elem] of arr.entries()) { console.log(index, elem); }