直接民主是古希腊时期雅典民主政治的主要特色之一。下列关于古希腊民主政治的条件中与这一

阅读理解。

    When Mencius (孟子) was a small boy, his father died. So Mencius and his mother were quite poor.

One day, Mencius returned home from school and found his mother making some cloth. It was very

beautiful and expensive.

    "How much of your book have you read today?" Mencius' mother asked him. Mencius threw down

his book. "I haven't read any of it." He replied, "I played with some friends of mine in the fields."

    When his mother heard this, she picked up a pair of scissors (剪刀) and cut the cloth. "Why have

you cut your cloth?" Mencius asked, "It was so beautiful and now you've wasted it." "You have wasted

your time," she said, "Now I have wasted mine. Look at the terrible (可怕的) thing we have done!"

    Mencius learned a lot from this lesson. After this, he always studied hard.

1. When did the story happen?[ ]

A. When Mencius was 30 years old.

B. When Mencius' family was very rich.

C. When Mencius' father lived with them.

D. When Mencius was a small boy.

2. The phrase "make some cloth" means "______". [ ]

A. 做衣服

B. 织布

C. 纺棉花

D. 缝衣服

3. Why did Mencius' mother cut the cloth? Because ______. [ ]

A. She wanted to make some more beautiful cloth

B. She thought it was wasting time to make cloth

C. She wanted to let her son get angry

D. She wanted to give her son a lesson

4. Why did Mencius always study hard after this? Because ______. [ ]

A. he wanted to be a teacher

B. he learned a lot from the lesson

C. he wanted to make his mother happy

D. he didn't play with any other friends

5. This passage mainly tells ______. [ ]

A. A story of Mencius and his friends

B. a story of Mencius' mother

C. a story about Mencius' wasting time

D. Mencius' mother cut the cloth

初产妇，25岁妊娠39周，宫口开全，抬头披露已1小时无进展，行会阴左侧切开，顺利娩出一男婴，体重3.4kg，8分钟后胎盘娩出，检查胎盘胎膜完整，会阴伤口外缝3针，产后在产房观察2小时， * * 出血不多。产后体格检查：T37.5℃，P60次／分，R18次／分，BP120/70mmHg，实验室检查：WBC17×10⁹/L（产后第一天）。

提示：产后2天，会阴伤口出现局部水肿疼痛，提问：正确会阴护理是（）。

A.1：5000高锰酸钾溶液冲洗，每天2次

B.每天观察伤口

C.保持会阴部清洁

D.芒硝外敷

E.提前拆线

F.抗生素治疗

如图22所示装置

图20

 ，绳重及摩擦不计。装卸工人将重为800N的货物提至高处，人对绳的拉力F₁为500N，货物在1min内匀速上升了5m。

（1）请在图上画出绳子的绕法；

（2）求滑轮组的机械效率；

（3）如果重物是600N，要把重物提升5m，求拉力做的功。

超声波探伤仪测距为横波声程250mm，用0°探头发现钢轨内有一缺陷回波显示于3.6格，则此缺陷距探测面的垂直距离约为（）。

A、164mm

B、90mm

C、49mm

D、120mm

SIMMPLE协议族是IM通用的协议的主要代表之一，它是哪个协议族的扩展______。

A．MSNP

B．SIP

C．XMPP

D．JABBER