王军全年的应纳税额为( )元。A．4260 B．5700 C．12055 D．13

（12分）【化学一物质结构与性质】

根据物质结构与性质的关系，请回答下列问题：

（1）基态铬(Cr)原子的价电子排布式是________，这样排布使整个体系能量最低，原因是________。

（2）氨水中存在多种形式的氢键，其中与“氨极易溶于水”这种性质相关的氢键可表示为：_________。解释NH₃分子中键角大于H₂O中的键角的原因是_________ 。

（3）下列各项的比较中正确的是_________。

A．第一电离能：Mg>Al

B．电负性：P>Ge

C．稳定性：AsH₃>H₂S

D．金属性：（4） Fe单质的晶体在不同温度下有两种堆积方式，晶胞

结构如图所示，体心立方晶胞和面心立方晶胞中实际含有的

Fe原子个数之比为_________。

氧气在血液里存在的主要形式是

A．呈游离态氧

B．溶解在血浆里

C．扩散在血液中

D．氧合血红蛋白

Bolivia has a population three and a half million . About one tenth of the total population are white ; one-fourth are mixed Indians and white ; and more than half are full-blooded Indians . The government and the industries are under the control of the white people .

The Indians today live in much the same way as their ancestors . Most of them are farmers . Many work in the mines , for mining is the most important industry on Bolivia’s . Of all the mining products , tin is the most important , which makes up three-fourths of all Bolivia’s exports . The eastern slopes of the Andes , since there are very few roads there , are fertile but not highly developed . The two primary means of transportation are river boats and porters . East of the hill region are the great plains where tropical plants are grown . A serious problem for Bolivia is the transport of food from the warm regions , where it is grown to the mountainous regions , where most of the people live .

Bolivia gained its independence from Spain about a hundred years ago . It has been slow in developing , but its rich resources promise a better future in it .

小题1:The majority of the Bolivian population are        .

A．full-blooded Indians

B．mixed Indian and white

C．white citizens

D．all whites and mixed-blooded people小题2:The Indian’s way of life today is       

A．quite different from that of their ancestors

B．quite interesting

C．almost the same as their ancestors’

D．very exciting小题3:The main product Bolivia exports is       

A．tropical plants

B．gold and silver

C．tin

D．food小题4:Bolivia has been slow in developing , but it has hope for a better future because of its        .

A．mining products

B．rich resources

C．independence from Spain

D．two primary means of transportation

下列哪些为流行性腮腺炎临床表现（）

A.进食酸性食物时疼痛加剧

B.可累及下颌下腺或舌下腺

C.通常一侧腮腺肿大2～4天后又累及对侧

D.挤压腮腺时有脓液自腮腺导管口流出

E.腮腺肿大以耳垂为中心，向前、后、下发展

疝术前嘱病人排尽尿液是为了

A．防止尿在手术台上
B．防止尿多病人躁动
C．防止术后尿潴留
D．防止术中损伤膀胱
E．例行公事