阅读下列短文，根据要求完成下列问题。

Dear Mike,

    We got your letter yesterday. Yes, we can visit you at Christmas. We thought to spend (度) Christmas

at home, but now we are going to be with you. Jack will not be in school then.

    The weather in Chicago is cold, but is doesn't matter. Sometimes we like the snow.

    We got our plane tickets. We will get to your city on the 18th. We will stay with you for two weeks.

Is that all right with you?

    We'll take our favourite recipes (食谱), so we can have a nice Christmas dinner.

    See you soon. 

                                                                                                                                   Love

                                                                                                                                  Mom and Dad

根据短文内容用适当的单词完成下面句子(每空一词)。

1. This letter is from Mike's                .

2. In Chicago, it is                now.

3. Mike's parents will go to his city by               .

4. His parents will come back on                31st.

5. Mike and his parents will                a nice dinner on Christmas Day.

全口义齿解剖式人工牙常规排列时，与平面不接触的是（）

A.切缘

B.牙尖

C.舌尖

D.颊尖

E.舌尖