英语邀请信 Dear sir/madam ORGANIZATION would very much like to have someone from your company speak at our conference on TOPIC。
As you may be aware the mission of our association is to promote WHAT。 Many of our members are interested in the achievements your company has made in。
Enclosed is our preliminary schedule for the conference which will be reviewed in weeks。 I'll call you DATE to see who from your company would be willing to speak to us。
I can assure you that we'll make everything convenient to the speaker。 Sincerely yours NAME。
答：公司信头Invitatio :BusinessTripWe,(公司名),isnowstartingthebusinessrelationshipwithXXX(...详情>>
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答：目前只要取得教师资格证，就是长期有效的，没有时间限制的。 不清楚您说的什么教育学和教育心理学的成绩，如果是在申请时考试的成绩，一般最长保留2年，直到取得教师资格...详情>>
