New words：
practical [ˈpræktɪk(ə)l] adj.实际的；切实可行的；真实的；客观存在的impractical [ɪmˈpræktɪk(ə)l] adj.不明智的；不现实的；不切实际的
Sample Sentences：
Paul was dreamy and not very practical.
The book provides practical advice for job seekers.
She criticized the impractical plan.
Wearing high heels to climb a mountain is impractical.
New words：
chef [ʃef] n. 厨师,尤指主厨
Sample Sentences：
Try this new dish, created by our head chef.
The chef changes items on the menu each day.
James works as assistant chef at a fast food restaurant
item [ˈaɪtəm] n.项目；一件商品（或物品）；一则；条款
New words：
assist [əˈsɪst] v. 协助；帮助assistance [əˈsɪstəns] n. 帮助；援助；支持
Sample Sentences：
Can you assist me carry this box?
The nurse assisted the doctor during surgery.
He can walk only with the assistance of crutches.
She offered me practical assistance with my research.
practical [ˈpræktɪk(ə)l] adj.实际的；切实可行的；真实的；客观存在的
New words：
assistant [əˈsɪstənt] n. 助理；助手
Sample Sentences：
My father hired an assistant to help with his work.
The chef’s assistant washes vegetables and cuts meat.
The assistant in the library showed me where the storybooks are.
chef [ʃef] n. 厨师,尤指主厨
New words：
expense [ɪkˈspens] n. 费用；开支；花费；开销
Sample Sentences：
The results are well worth the expense.
We must limit the expenses to $100 a month.
It's a great expense to have the whole house painted.