简述什么是货币替代。

阅读理解。

     How can you tell (分辨) the twin sisters of Singaporean pop group By2 apart? The secret is in their

hairstyle: the one with bangs (刘海) is the younger sister, Yumi, and the one without is the elder sister,

Miko. Miko and Yumi look almost the same. But Miko is quiet and Yumi is more outgoing.

     The sisters became singers when they were only 15. In 2007 they won a talent competition (才艺

比赛) and signed (签约) with a recording company (唱片公司).

     Earlier this month, By2 released their new single Red Dragonfly (《红蜻蜓》). The song is No.1

on many music charts (排行榜). By2 made their debut (初次露面) in 2008 on the Internet and has

released three albums since then. Many of their songs are popular among teenagers (青少年) such as

I Know and Buy, Buy, Buy.

     By2 now lives in Taipei. They went to cities like Tokyo and Beijing for trainings in singing and dance.

" We learnt about different cultures in these cities. This is something that most of our friends could not

learn from books." They said.

1. By2 comes from _____.

A. China

B. Japan

C. Singapore

2. From the passage we know that the one with bangs is _____.

A. more popular

B. more outgoing

C. quieter

3. The twins were born (出生) in _____.

A. 1990

B. 1992

C. 2007

4. According to the passage, _____ like the twins most.

A. young people

B. old people

C. middle-aged people

5. The twins had singing and dance training in _____.

A. big cities

B. Taipei

C. Shanghai

线路停电时，应先将该线路可能来电的所有断路器（开关）、线路隔离开关（刀闸）、母线隔离开关（刀闸）全部拉开，手车开关应拉至试验或检修位置，在线路上所有可能来电的各端装设接地线或合上接地刀闸（装置）。

炎症性包块和肿瘤性包块在腹部触诊时有什么区别？

幼儿被黄蜂蛰伤后，处理方法是（）。

A、涂酱油

B、涂碘酒

C、涂弱酸性液体

D、用淡碱水或肥皂水冲洗

对于工作规模或产品界定不太明确的外包项目，一般应采用（）的形式。

A.固定总价合同

B.成本补偿合同

C.工时和材料合同

D.采购单