以下哪项是体质性性早熟的临床表现（） A.患儿体重身高增长缓慢 B.绝大多数在4～8

阅读理解。

     In white shirt, blue pants, black cloth shoes and two pigtails, Jingqiu gives off an air of great "

pure beauty" in Zhang Yimou's new movie Under the Hawthorn Tree, which tells the story of

the sad romance of Jingqiu and a handsome young man named Laosan set at the end of

the "cultural revolution" (1966-- 1976).

     Before it was released, moviegoers foresaw what this "pure beauty" could be. Director

Zhang complained of how long it had taken him to find the right girl for the part of Jingqiu 

a character so innocent. She believes that simply lying on the same bed as a man will make

her pregnant.

     It was 18-year-old Zhou Dongyu who stood out from the crowd. According to Zhang,

Zhou has "eyes that are clear like a fountain on a mountainside". Born to an ordinary worker's

family, the Shijiazhuang girl was in her final year of high school and working hard for a place in

an art college.

     "If you have fair skin and clear eyes, as Jingqiu does, it is easy to look pure. Girls today

wear so many jewels and make-up--that's the reason Zhang was not interested," said Du Yanlai

, 17, of Chengdu.

     While some teenagers consider such "pure" beauty illusory, others believe that it speaks of

something soulful.

     Purity is all about an innocence that shines through from within, thinks 16-year-old Tan Mengxi

of Nanjing. "Being pure can be simple, not having complicated thoughts and being inexperienced.

However, it doesn't mean an ignorant or native person. So, a person is pure in his or her nature if

he or she is always enthusiastic and able to deal with difficult matters independently. This purity

doesn't pass with time, "she said.

1. What's the real purity according to Tan Mengxi?

A. Having eyes as clear as a fountain.

B. Not wearing so many jewels and make-up.

C. Being ignorant and native.

D. Being simple, enthusiastic and able to manage things alone.

2. What does the underlined word "illusory" mean here?

A. unreal.        

B. unhealthy.

C. unscientific.  

D. negative.

3. What can we infer from the passage?

A. Zhou Dongyu, who was 18,was from an art college.

B. Director Zhang disliked those girls with so many accessories and make-up.

C. Different people have different opinions about purity.

D. Many young girls in China are eager to stand out.

4. The main idea of the passage is          .

A. Why Director Zhang selected Miss Zhou as the leading star

B. How people like the movie Under the Hawthorn Tree

C. What makes a pure girl

D. Why Chinese girls want to be pure

生活中碰到的某些问题常常涉及到化学知识，下列做法中正确的有：

①用还原铁粉可防止富氧食品被氧化；

②用甲醛溶液浸泡海产食品；

③香肠中可以加大量的亚硝酸钠以保持肉类新鲜；

④药皂中常常掺有少量苯酚；

⑤天然蛋白质水解后产生的氨基酸一定是α—氨基酸。

A．2句

B．3句

C．4句

D．5句

本体指天地万物的内在基础。在天地形成之后，作为天地基础的本体并不消失，而继续作为天地万物的内在依据永恒存在着，这是所谓本体。在老子的学说中，道在生成天地万物之后依然是天地万物的深藏的依据。所以( )

A．老子的学说是一种本体论

B．老子的学说成为道家思想的哲学基础

C．老子的学说与本体论相互补充

D．老子的学说与本体论相互矛盾、对立

《超高压容器安全技术监察规程》规定，超高压容器筒体及主要受压元件超声检测灵敏度为φ2mm当量直径。

简述丙酸盐防腐特点与适用范围。