中国大学MOOC: 以下代码：var letters = 0123456789ABCDEF;for (var j = 0; j < 6; j++) {c += letters[Math.floor(Math.random() * 15)]}运行后，c的值为：（ ）
中国大学MOOC: 以下代码：var letters = 0123456789ABCDEF;for (var j = 0; j < 6; j++) {c += letters[Math.floor(Math.random() * 15)]}运行后，c的值为：（ ）
[音频]People _____ up and drop off letters and parcels.
[音频]People _____ up and drop off letters and parcels.
What are the types of business letters? A: Letters of establishing business relationship B: Letters of shipment C: Letters of claim D: Letters of acceptance E: Letters of quotation F: Letters of enquiry G: Letters of counter-offer H: Letters of negotiation
What are the types of business letters? A: Letters of establishing business relationship B: Letters of shipment C: Letters of claim D: Letters of acceptance E: Letters of quotation F: Letters of enquiry G: Letters of counter-offer H: Letters of negotiation
（）are mentioned at the beginning of the passage. A: Love letters B: Complaint letters C: Thanks letters D: Invitation letters
（）are mentioned at the beginning of the passage. A: Love letters B: Complaint letters C: Thanks letters D: Invitation letters
中国大学MOOC: What categories can letters be divided into? A．Personal Letters B. Social Letters C. Notes D. Business Letters
中国大学MOOC: What categories can letters be divided into? A．Personal Letters B. Social Letters C. Notes D. Business Letters
Generally speaking, letters can be classified into formal letters and informal letters based on the formality of letters.
Generally speaking, letters can be classified into formal letters and informal letters based on the formality of letters.
Could you tell me______ in the Russian alphabet A: how many letters are B: how many letters are there C: how many there are letters D: how many letters there are
Could you tell me______ in the Russian alphabet A: how many letters are B: how many letters are there C: how many there are letters D: how many letters there are
All keywords in C are in ____________ A: LowerCase letters B: UpperCase letters C: CamelCase letters D: None of the mentioned
All keywords in C are in ____________ A: LowerCase letters B: UpperCase letters C: CamelCase letters D: None of the mentioned
1. What categories can letters be divided into?A．Personal Letters B. Social Letters C. Notes D. Business Letters. A: A．Personal Letters B: B. Social Letters C: C. Notes D: D. Business Letters.
1. What categories can letters be divided into?A．Personal Letters B. Social Letters C. Notes D. Business Letters. A: A．Personal Letters B: B. Social Letters C: C. Notes D: D. Business Letters.
Informal letters are usually business letters or written to strangers.（ ）
Informal letters are usually business letters or written to strangers.（ ）