KSLM系列水力锚的工作压力是（）MPa。 A.20～25 B.30～35 C.50

写作内容：
假如你是李华，在美国留学。你母亲今天下午要从国内来看你，但你凑巧要去做个讲座，故给你的朋友Peter留下字条请他下午三点半去机场接你母亲。因Peter未见过你母亲，请根据下表在字条中描述你母亲的特征以便他辨认。

age	around sixty
appearance	fat, short, gray hair, a long face
clothes	a white blouse, brown trousers
luggage	a yellow suitcase

 
写作要求：
1．必须使用5个句子介绍全部所给内容；
2．词数：100词左右。开头和结尾已经给出，不计入总词数。
评分标准：
句子结构的准确性和复杂度；信息内容的完整性和连贯性。
Sunday
Peter,
I am very glad that my mother is coming this afternoon by air.
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                       
I will be grateful to you for your help.
Yours,