商事主体按照组织形态可以划分为商个人、商合伙、以及（） A.销售商 B.代理商 C.

Dreams can happen in any of the four stages of sleep. The most memorable and clearest dreams happen in the last stage of sleep (also known as REM sleep). The sleep cycle repeats about four to five times every night. So you can see how a person has several different dreams in one night. Most people only remember dreams that happen closer to the morning when they are about to wake up. That you can’t remember those dreams does not mean they never happened.

The stages in the sleep cycle are organized by the changes in different brain activities.

Stage 1: You are entering into light sleep. In this stage, your eyes move rapidly. We call this NREM. The body gets relaxed and your body temperature lowers. Your heart rate lowers, too. The body is preparing to enter into deep sleep.

Stage 2: Also characterized by NREM. In this stage, the body temperature and heart rate drop again. You are completely asleep.

Stage 3: Still in the NREM stage, this is a deeper sleep still.

Stage 4: In this stage of sleep, your eyes move back or forward. We call it REM sleep. This stage happens at about 90-100 minutes after the beginning of sleep. Your blood pressure rises, heart rate speeds up. The majority of your dreams happen in this stage.

These stages repeat themselves throughout a night’s sleep.

小题1: Dreams can happen in ___________.

A. Stage 1 and 2           B. Stage 3 and 4            C. every stage

小题2:Which of the following sentences is TRUE according to the passage?

A. These stages will happen once or twice one night.

B. Most people only remember the dreams that happen when they are about to wake up.

C. If one can’t remember his dreams, he never dreams at all.

小题3:What will happen in Stage 2?

A. Eyes move rapidly.   B. People enter into light sleep.    C. Heart rate drops.

小题4:The first REM sleep happens about ___________ after the starting of sleep.

A. 1 to 2 hours                     B. 2 to 3 hours                     C. 10 minutes

小题5:The passage is mainly about ___________.

A. the stages of sleep     B. types of dreams         C. remembering dreams

（）

A．等额序列支付储存基金系数

B．等额序列支付现值系数

C．等差序列现值系数

D．等比序列现值系数

某7层住宅楼采用天然地基，基础埋深在地面下2m，地震设防烈度为7度，设计基本地震加速度值为0.1g，设计地震分组为第一组，场地典型地层条件如题35表所示，拟建场地地下水位深度为1.00m，根据《建筑抗震设计规范》（GB 50011—2001），场地液化指数最接近（）。

题35表

A．4.5

B．7.0

C．8.2

D．9.6

制定工程建设项目的进度计划应考虑( )等可能影响工程实施进度的因素。

A．工程施工单位名称

B．工程规模

C．工程施工工序

D．施工作业面数量和工作面移交时间

E．外部环境影响因素

常用人工呼吸法正确的有（）。

A、口对口吹气法

B、俯卧压背法

C、仰卧压胸法

D、口对口吸气法