疫苗批发企业的购销记录应保存的期限为超过疫苗有效期后（） A.1年 B.2年 C.3

a（y-x）-b（x-y）．

阅读理解。

     Every kid wishes to be an adult. But now as grown-ups, some adults find they cannot leave childhood

behind. They become "kidults" (kid+adult). Being a kidult has become a lifestyle-choice among young people

across Asia.

     Some kidults collect toys they once played with. Hello Kitty, Garfield, and Snoopy have many adult fans

around the world. It is not unusual to see a 20-something woman with a big, Garfield-shaped cushion (坐垫)

on her sofa or a Hello Kitty mobile phone accessory (挂件).

     Other kidults still enjoy children's stories and fairy tales. For example, Bloomsbury even published the

Harry Potter novels with an adult cover. That way, no one else on the subway will know that an adult is

actually reading a children's book!

     "Kidults can be like vitamins to society. Adults who value their childhood and hold on to pure, child-like

emotion may be needed in such a rough and dry society," said Lee Sojung, professor of Foreign Studies at

Hankuk University (韩国外国语大学). He added that kidult culture may fill the generation gap between adults

and kids. It could give children and their parents books, movies, and cartoon shows to enjoy together. He may

be right.

     Tim Greenhalgh, a professor, explained that some kidults just refuse to grow up. They value childhood

because life in a busy and stressful city frightens them. Kidults would like to forget their age and openly show

their fear of society and adulthood.

1. Why did Bloomsbury publish the Harry Potter novels with an adult cover? [ ]

A. Bloomsbury knows some kidults don't want people to know that they are kidults.

B. Bloomsbury thinks it can attract more readers.

C. Bloomsbury knows kidults prefer to chose books for adults in nature.

D. Bloomsbury thinks the cover with an adult is better.

2. Being a kidult is good in some way EXCEPT that _____. [ ]

A. it is helpful to solve some social problems

B. it can make people listen to their parents

C. it can improve the relationship between parents and their kids

D. it can help kidults feel relaxed

3. According to the writer, _____. [ ]

A. our society is very dull

B. kidults have mental problems

C. being a kidult is nothing wrong

D. some people can never grow up

下列哪些是眼睑水肿常见的原因（）

A.肾炎

B.慢性肝病

C.贫血

D.营养不良

E.血管神经性水肿

餐具的形状和______不同，构图布局范围也有差异。

A．大小

B．高低

C．质量

D．色彩

下列哪项属于垂体性闭经

A．多囊卵巢综合征

B．希恩综合征

C．Turner综合征

D．宫腔粘连

E．梅格斯综合征