写作。根据中文提示，写出内容完整、意思连贯、符合逻辑、不少于50词的短文。

       下面是一位美国中学生的来信。假设你是王英，请你写一封回信，解答他来信中提出的问题。（信的开头及结尾均已给出，不计入总词数。）

Dear Wang Ying,

        How are you? Summer holiday is coming soon. I'm going to the seaside for my holiday. But I don't like

to go there with my parents. I don't get on well with them because they are always trying to teach me. Do you

have the same problem? What about parents? How can we get on well with our parents?

        Hope to hear from you soon. 

                                                                                                                                           Yours, 

                                                                                                                                      David Smith  

Dear David,

        Thank you for your letter. I'm very well, thank you.

        For my summer holiday,                                                                                                                  

        Hope to hear from you again.

                                                                                                                                           Yours,

                                                                                                                                        Wang Ying      

急性感染性多发性神经根炎患儿入院时的双下肢肢体在平面上能带动关节活动，能克服地心引力，可判断患儿的肌力是（）

A.0级

B.Ⅰ级

C.Ⅱ级

D.Ⅲ级

E.Ⅳ级