协奏曲的体裁特点有
A. 双呈示部
B. 华彩乐段
C. 主奏乐器与乐队的抗衡协作
Which sentence is used in the letter of thanks.
A. Please accept my sincere apology for…
B. I am writing for information about…
C. I would like to take this opportunity to express my thanks for…
D. I am writing to introduce…
Which sentence is used in the letter of suggestion.
A. It would be highly appreciated if you could…
B. I believe you will take my advice into account.
C. It is with great pleasure that I recommend to you…
D. In reply to your advertisement, I wish to apply for…
Whcih letter is a business letter.
A. letter of invitation
B. letter of consolation
C. letter of thanks
D. Letter or placing an order
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