人类免疫细胞分化成熟的场所是（）。 A.骨髓和胸腺 B.淋巴结和胸腺 C.骨髓和脾脏

U={1，2}，A={x|x²+px+q=0}，C_UA={1}，则p+q=（    ）。

阅读理解。

     AMERICANS love to drive. They have drive-in movie theaters,drive-through restaurants and

driving vacations. It's often called the Great American Road Trip ":your whole  family gets into a van

(货车) or recreational vehicle (RV, 旅行房车), and hits the road for a summer trip across the country.

      American cars are always big, but Rvs are the biggest. These are houses on wheels. RVs have

kitchens,bathrooms and bedrooms. All across the country you can find RV parks-places to park your

RV and spend the night. And, if you can't find one,you can always make your home in a grocery store

(杂货店) parking lot.

    As big as RVs are , they still seem very small to a family who has to spend every hour of everyday

together. With your little brother kicking you in the face all night in your tiny bed under the table, the

dog barking and Mom playing her country music on the radio , your family is not at its best. What's

worse , RVs are always breaking down. So expect to spend a lot of time watching dad under the RV

on the side of a dusty road.

     But RV travel can be a great time with the family, too. You can see the country in your own

comfortable "home". You can spend every night in different places , or just stay where you are. You

don't have to pay for hotels or restaurants, only gas. But, best of all, you are free to go wherever you

want whenever you want in your home away from home.

1. RVs don't have ______.

A. Bathrooms

B. Gardens

C. Bedrooms

D. Kitchens

2. The underlined word "kicking" in the passage means "______".

A. 撞        

B. 打      

C. 踢

D. 挤

3. Why do American people like to travel in RVs?

A. Because RVs can go faster than other cars.

B. Because they don't have to pay for gas.

C. Because RVs never break down on the road.

D. Because they can spend every night in a different place.

4. If you travel in RVs, you don't need to ______.     

A. stay where you are     

B. pay for hotels or restaurants     

C. see the country in your own comfortable "home"

D. be free to go wherever you want whenever you want in your home away from home

5. Which of the following is TRUE according to the passage?     

A. Traveling in RVs is more expensive than living in hotels.      

B. RVs are big enough for families traveling together.     

C. It is not difficult to find parking places for RVs and spend the night.     

D. It is less fun to travel in RVs than to stay in hotels.

患儿男，5岁。反复眼睑水肿2个月，尿常规：尿蛋白（++），红细胞满视野，血清中乙肝标志物为大三阳，既往无肾炎病史，家族中无血尿患者。曾经诊断肾病综合征，使用足量肾上腺皮质激素治疗，水肿无减轻，尿蛋白无减少。肾活检结果可能是（）

A.膜增生性肾小球肾炎

B.IgM肾病

C.膜性肾病

D.微小病变型肾病

E.毛细血管内增生性肾小球肾炎

某省统计局在一次常规的工作检查中发现，该省某县的统计数据质量存在较大问题。经查，该县统计局按照工作程序搜集、汇总、核算出统计数据后，报告给该县领导人员。县领导人员马上开会对统计数据进行了讨论分析和研究，认为统计局所报的统计数据与本县的实际情况不符，需要重新核实填报。于是，县统计局组织部分析工作人员对统计数据进行了调整，得到县领导人员的认可后，才向上级统计机构报送。

该县领导人员的统计违法行为是（）。

A.提供不真实的统计资料

B.编造虚假统计数据

C.对本地方、本部门、本单位发生的严重统计违法行为失察

D.要求统计机构、统计人员或者其他机构、人员伪造、篡改统计资料

营业柜台办理现金收付业务，坚持（）。一笔款项尚未办理完毕，经办人员不得中途（）。

A.一笔一清

B.串岗

C.离岗

D.或者换人