编写一个小程序，在列表中找到最长的单词，并返回它。
word_list = ["apple", "banana", "watermelon", "orange", "pear"]
```python
word_list = ["apple", "banana", "watermelon", "orange", "pear"]
longest_word = ""
for word in word_list:
    if len(word) > len(longest_word):
        longest_word = word
print(longest_word)
```

输出结果为: "watermelon"