【简答题】Writing: Suppose you are a close friend of the Elliott family. Write a letter of condolence(吊唁) to Pauline on the death of Frank. Write a letter of about 130 words.
【简答题】Write a letter of condolence to the patients in Wuhan hospitals with about 150 words.
【单选题】灯具在空间各个方向上的光强的分布情况用()来描述。
【简答题】A)They are talking about an advertisement. B) They are talking about an interview. C)They are talking about the time for the interview. D)They are talking about the interviewees.
【单选题】Who is the woman C is sweeping the floor over there?
【单选题】What are they talking about?
A.
They are talking about the man's vacation.
B.
They are talking about their vacation plans.
C.
They are talking about the weather.
【简答题】Who is the woman buying the gift for?
【简答题】(1)Write the possible values of l when n=5. (2)Write the allowed number of orbitals (a) with the quantum numbers n=4,l=3;(b) with the quantum numbers n=4;(c) with the quantum numbers n=7,l=6,m=6;(d) w...