元代后期的隐士书家群是如何形成的？有哪些代表书家？并阐述他们的风格特征。

阅读理解。

Dear friend ,

     Hello,I'm your new friend. My name is Bob. I'm fifteen. I'm American. I

live in New York.

     I am a middle school student. I'm good at maths. It's very interesting. My

favourite sport is basketball. And I am not only a basketball fan but also a

good player. I like pop music, my friends and  I often sing pop songs together.

     After school I am interested in getting online. I have known a lot about

China from the Internet. Now I'm learning Chinese.I hope I will visit  your

country in the future.

     Please   write to  me  and tell me something about your life. I'm looking

forward to hearing from you.

                                                                                                    Yours ,

                                                                                                     Bob

1. Who is the letter from?

2. Where does Bob live?

3. What is Bob's favourite sport?

4. Do Bob and his friends often sing pop songs?

5. 将画线部分翻译成汉语。

3个9相加得（    ），再加上2个9得（    ）。

某孕妇，妊娠32周，因“胎膜早破”14小时入院，检查发现胎心音正常，无腹痛。错误的处理措施是

A．给予抗生素

B．严密观察孕妇生命体征

C．监测白细胞计数

D．监测胎儿宫内安危

E．无需使用抗生素

会计人员的( )是会计职业道德的保证。

A．诚实守信

B．服务态度

C．职业纪律

D．技能水平

音质音位和非音质音位