下列主动脉瓣关闭不全引起周围血管征的叙述正确的是:A．有效循环血量增加,致水冲脉 B

缺词填空。

     Peter is a teacher in a middle school in Shanghai. He (1)t_______ English. He is (2)f_______ America. His

parents aren't in China. They (3)a_______ in America.

     Shanghai is very nice and Peter likes it very (4)m_______His school is very nice, (5)t_______. The other

teachers and the students are (6)a_______ very friendly. On Sundays Peter often (7)g_______ to the parks

with some Chinese friends. Peter can (8)s_______ much Chinese. He often (9)t_______ with Chinese people.

He is very (10)h_______ in China.

男性，46岁，1周前因过敏性紫癜住院静脉点滴甲基强的松龙，3天前受凉后出现下腹痛，尿频，1天来尿中带血丝，尿液分析结果为pH7.0，SG1.105，Pm0.3g／L，WBC30／μl，RBC22／μl

尿培养最可能出现的情况是（）。

A.革兰氏阴性菌

B.艾希大肠杆菌

C.克雷白杆菌

D.厌氧菌

E.金黄色葡萄球菌

在第六次全国人口普查过程中，一位市民从被调查者的角度提出了对做好人口普查工作的改进建议。该市民的做法(      )

①表明公民是国家的主人       ②履行了遵守宪法和法律的义务

③行使了公民的民主监督权利   ④直接参与了国家权力的行使

A．①②

B．②③

C．②④

D．①③

有如下程序：
#include ＜iostream＞
void fun(int& x,int y)int t=-x;x=y;y=t;
int main()

int a[2]= 23,42;
fun(a[1],a[0]);
std::cout＜＜a[0]＜＜","＜＜a[1]＜＜std::end1;
return 0;

A) 42, 42 B) 23, 23
C) 23, 42 D) 42, 23

企业发生的公益性捐赠支出，在年度利润总额( )以内的部分，准予在计算应纳税所得额时扣除。

A．9%

B．12%

C．15%

D．20%