BSC中的导频集可以只有（）、（）。

远期合约是双方在将来的一定时间，按照合约规定的价格交割货物，支付款项的合约。同远期合同相比，关于期货合约下列说法正确的是( )。

Ⅰ．在交易所交易的标准化合约

Ⅱ．只能用实物交割来进行清算

Ⅲ．实行保证金交易，缴纳初始保证金

Ⅳ．违约风险降低

Ⅴ．合约缺乏流动性

A．Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ
B．Ⅱ、Ⅲ、Ⅳ、Ⅴ
C．Ⅰ、Ⅱ、Ⅲ
D．Ⅰ、Ⅲ、Ⅳ

城市总体规划编制基本工作程序中不包括（）

A.现状调研

B.基础研究与方案构思

C.编制城市总体规划纲要

D.规划与城市建设协调

关于AIDS的发病机理，下列哪一项是错误的（）.

A.隐蔽抗原的释放

B.外来抗原与机体组织抗原交叉

C.替代途径激活补体

D.免疫系统调节机能紊乱

E.以上都不对

阅读理解。

     All her life, my mother wanted busy children. It was very important that her house should remain it all

times clean and tidy.

     You could turn your back for a moment in my mother's house, leave a half-written letter on the dining

room table, a magazine open on the chair, and turn around to find that my mother had "put it back where

it belonged," as she explained.

     My wife, on one of her first visits to my mother's house, placed a packet of biscuits on an end table and

went to the kitchen to fetch a drink. When she returned, she found the packet had been removed. Confused

(疑惑的), she set down her drink and went back to the kitchen for more biscuits only to return to find that

her drink had disappeared. Up to then she had guessed that everyone in my family held onto their drinks, so

as not to make water rings on the end table. Now she knows better.

     These disappearances had a confusing effect on our family. We were all inclined to (有……的倾向)

forgetfulness, and it was common for one of us, upon returning from the bathroom, to find that every sign

of his work in progress had disappeared suddenly. "Do you remember what I was doing?" was a question

frequently asked, but rarely answered.

     Now my sister has developed a second-hand love of clean windows, and my brother does the cleaning

in his house, perhaps to avoid having to be the one to lift his feet. I try not to think about it too much, but

I have at this later time started to dust the furniture once a week.

1. Which of the following is TRUE about my mother?

A. She enjoyed removing others' drinks.

B. She became more and more forgetful.

C. She preferred to do everything by herself.

D. She wanted to keep her house in good order.

2. My wife could not find her biscuits and drink in my mother a house because _____.

A. she had already finished them

B. my mother had taken them away

C. she forgot where she had left them

D. someone in my family was holding them

3. The underlined part in the fifth paragraph suggests that my sister _____.

A. is happy to clean windows

B. loves to clean used windows

C. is fond of clean used windows

D. likes clean windows as my mother did

4. This passage mainly tells us that _____.

A. my mother often made us confused

B. my family members had a poor memory

C. my mother helped us to form a good habit

D. ray wife was surprised when she visited my mother

口甜而腻多见于（）

A.肝胆实热

B.脾胃湿热

C.肝胃蕴热

D.食积内停

E.脾虚不运