袋装砂井中填充材料的含泥量不应大于（）。

男，60岁，主诉近2天头晕、胸闷、心悸，来院就诊。

测量血压时，关于注意事项的描述中错误的是（）。

A.安静环境下在有靠背的椅子休息至少5分钟

B.测量时需仰卧或坐位测血压

C.被检查者上肢裸露伸直并轻度外展，肘部置于心脏同一水平

D.向袖带内充气，一般充气到200mmHg以上后，缓慢放气

E.将气袖均匀紧贴皮肤缠于上臂，使其下缘在肘窝以上约2~3cm

一水平抛出的小球落到一倾角为θ的斜面上时，其速度方向与斜面垂直，运动轨迹如图中虚线所示．则此时小球水平速度与竖直速度之比、小球水平方向通过的距离与在竖直方向下落的距离之比分别为（ ）

A．水平速度与竖直速度之比为tanθ

B．水平速度与竖直速度之比为

C．水平位移与竖直位移之比为2tanθ

D．水平位移与竖直位移之比为

阅读理解。

     Full of beauty, happiness and a healthy love of life, the Bulgarian (保加利亚人的) festivals and customs

date back to old time when man tried to live in peace with nature. The merriest and richest festivals are

Christmas and the New Year, when the so-called. "sourvakari" makes the round of house with wishes for

health and wealth. Other main festivals include "ladouvane"-a holiday for young girls on New Year's Day or

Midsummer Day (24th June), Shrovetide and Mummers' Games which mark the start of spring, and

"lazrouvane"-a traditional festival for love and family, health and richness. And among them, the widely popular

and typical Bulgarian customs and festivals are "martenitsas" and rose-picking.

     Every year on March lst, the Bulgarians give each other "mar-tenitsas"-a small doll made of white and red

strings, a symbol of the beginning of spring, health and happiness.

     In late May and early June every year, the rose-picking season starts in the Valley of Roses which is

between the Balkan Range and the Sredna Gora Mountains. Rose-picking starts at dawn, before sunrise and

before the pleasant smell of the rose has disappeared. The Bulgarian rose produces 70 percent of the world's

rose oil which is used by the very well-known perfume (香水) company as a basic element of its products.

This is the time of the Festival of Roses, celebrated with carnivals, happy activities, folk songs and dances in

Karlovo and Kazanluk on the first Sunday in June.

1. The passage is mainly about _____. [ ]

A. Christmas and the New Year in Bulgaria

B. the origin of Bulgarian festivals and customs

C. rose-picking and perfume industry in Bulgaria

D. typical customs arid festivals of Bulgaria .

2. Which of the following can be the best title for the passage? [ ]

A. "Martenitsas"-the Beginning of Spring

B. Beauty, Happiness and Love

C. Bulgarian Festivals and Customs

D. Rose-picking and "Martenitsas"

3. The author of this passage intends to _____. [ ]

A. let us know some knowledge of Bulgarian culture

B. tell us the differences between customs and festivals

C. explain the connection between customs and industry

D. find the origin of the Bulgarian customs

4. The second and the third paragraphs of the passage _____. [ ]

A. tell us how popular rose-picking is

B. link two festivals with health and richness

C. show us two merriest and richest festivals

D. talk about two typical Bulgarian festivals

5. This passage is most likely to appear in a _____. [ ]

A. magazine of travel

B. book on world culture

C. history book

D. daily newspaper

以一定的初速度竖直上抛一个小球，小球上升的最大高度为2h，设空气阻力大小恒定为ｆ，则从小球被抛出到回到出发点的过程中，空气阻力对小球做的功为_____________

某外商投资企业2004年为减免税最后一年(地方附加税同所得税减免)。2004购买国产设备用于生产经营，投资额80万元。该企业2003有经营亏损15万元，2004应纳税所得额为65万元(未补亏)，则2004可抵税的税额为()。

A．0万元

B．7.5万元

C．8.25万元

D．10.725万元