Dear Teresa Silva,
The official of the university has reported to us that you are an English major who meets the high standards for membership in Sigma Tau Delta. As is known, Sigma Tau Delta was founded in 1924 at Dakota Wesleyan University. It is an international collegiate honor society for students of English. It presently has over 850 chapters in the United States, Europe, the Middle East, and the Caribbean. Over 9,000 new members are admitted into the organization annually.
Sigma Tau Delta’s purpose is to promote literature and writing and to advance the study of the written word. Members gather annually in the spring at the international meeting to present papers and share experiences and ideas within the English subject. The Society offers tens of thousands of dollars in scholarships, awards, as well as publication chances in its journals The Rectangle and The Sigma Tau Delta Review.
It is our pleasure if you can complete the application for Sigma Tau Delta membership. If you would like to be included in this spring’s induction (入会) ceremony, please complete the application form, and include amount to cover both local and international fees. Your completed form must be received by date to be considered for the upcoming induction ceremony.
We congratulate you on your outstanding academic record and hope you will join us as a Sigma Tau Delta member. If you want to get more information, please visit our website www.sigmataudelta.org, or give us a call. The phone number is 583-2864.
Sincerely,
Emily Lister
According to the passage, Sigma Tau Delta ______.

A．deals with language learning

B．opens its door to all the students of English

C．changes its members every year

D．mainly takes charge of scientific publications

At the annual meeting, members of Sigma Tau Delta have the chance to ______.

A．meet all the chapter leaders

B．receive tens of thousands of dollars

C．share experiences and views

D．choose a particular subject as a major

This passage is basically a letter of _____.

A．introduction

B．congratulation

C．thanks

D．invitation