items = ["apple", "banana", "cherry", "date"]
prices = [30,20,15,10]
prices[2] = 25
items.remove('cherry')
prices.remove(15)
items.append('elderberry')
prices.append(40)
print("apple: ", prices[0])
print("商品\t价格")
for item, price in zip(items, prices):
    print(f"{item:}\t{price:}")