{'apple', 'orange', 1} 是一个集合。
举一反三
- 某集合数据（“Banana”、“Lemon”、“Apple”、“Apple”、“Pear”、“Orange”），请删除集合中所有的“Apple”。
- 下面创建数组的方法正确的有（ ）。 A: var fruit=new Array("apple","banana","orange","peach"); B: var fruit={"apple","banana","orange","peach"}; C: var fruit=["apple","banana","orange","peach"]; D: var fruit=["apple","banana","orange",123];
- Is this __________ apple tree? No, it is __________ orange tree.
- 中国大学MOOC: If orange juice and apple juice are substitutes, an increase in the price of orange juice will shift the demand curve for apple juice to the left.
- Is that an apple ______ an orange? A: and B: but C: or D: else