肾衰贫血的原因是（） A.红细胞生存时间缩短 B.毒素对骨髓的抑制 C.血液

第二次工业革命发生之后，人类社会发生了翻天覆地的变化。为此，某中学开展了“第二次工业革命带来的社会变迁”的研究性学习活动，学生们可以通过以下哪些事实证明他们的观点

①艾克斯穿着人造纤维的衣服去拜访亲友②爱丽丝与鲍勃谈恋爱不用面对面地进行　

③李克尔 梅在飞机上俯瞰美景④摩尔根家族开始投资石油工业，获利丰厚[ ]

A．①②③

B．①②③④

C．②③④

D．①②④

I was a single parent of four small children, working at a low paid job. Money was always tight, but we had a (1) over our heads, food on the table, clothes on our backs, and if not a lot, always (2) . Not knowing we were poor, my kids just thought I was (3) . I’ve always been glad about that.

It was Christmas time, and although there wasn’t (4) for a lot of gifts, we planned to celebrate with a family party. But the big (5) for the kids was the fun of Christmas (6) .

They planned weeks ahead of time, asking (7) what they wanted for Christmas. Fortunately, I had saved MYM120 for (8) to share by all five of us.

The big (9) arrived. I gave each kid a twenty-dollar bill and (10) them to look for gifts of about four dollars each. Then everyone scattered. We had two hours to shop; then we would (11) back at the "Santa’s Workshop"

Driving home, everyone was in high Christmas spirits, (12) my younger daughter, Ginger, who was unusually (13) She had only one small, flat bag with a few candies—fiftycent candies I was so angry, but I didn’t say anything (14) we got home. I called her into my bedroom and closed the door, (15) to be angry again. This is what she told me.

"I was looking (16) thinking of what to buy, and I (17) to read the little cards on the ’Giving Trees’. One was for a little girl, four years old, and all she (18) for Christmas was a doll. So I took the card off the tree and (19) the doll for her. We have so much and she doesn’t have anything. "

I never felt so (20) as I did that day.

6().

A.little 

B.less 

C.enough 

D.more

建筑安装工程造价的营业税的税额为营业额的( )。

A．3%
B．4%
C．2%
D．5%

DBS的数据独立性是指__（1）__；DBMS的功能之一是__（2）__；DBA的职责之一是__（3）__。编写应用程序时，需要把数据库语言嵌入在__（4）__中；为此应在DBMS中提供专门设计的__（5）__。

空白（3）处应选择（）

A.编制与数据库有关的应用程序

B.规定存取权

C.查询优化

D.设计实现数据库语言

E.确定数据库的数据模型

英国和法国都有议会，下列属于法国议会的是（）

A.上院和下院

B.国民议会和下院

C.国民议会和参议院

D.参议院和众议院