胆道蛔虫病（） A.上腹部钻顶样痛 B.上腹部刀割样痛伴腹肌紧张 C.右上腹绞痛 D

写出四道积是24的不同的乘法算式。

                        、                       

                        、                       

仪表施工技术交底应明确（）等具体的技术要求。

A.施工工艺

B.安全措施

C.施工程序

D.项目介绍

E.施工质量

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项.选项中有两项为多余选项.

  __1__  

According to figures, some 80 per cent of children with better than expected reading skills had their

own books, compared with just 58 per cent who were below the level expected for their age group.

Children as young as seven are more likely to own a mobile phone than a book, figures show.__2__

  Almost nineinten pupils now have a mobile compared with fewer than threequarters who have their

own books in the home, it was disclosed.The study by the National Literacy Trust suggested a link

between regular access to books outside school and high test scores.__3__  Research led by Nevada

University, in the United States, said that children coming from a "bookish home" remained in education

for around three years longer than young people born into families with empty bookshelves, regardless

of parents' own education, occupation and social class.

  __4__  By ensuring children have access to reading materials in the home and by encouraging children

to love reading, families can help them to do well at school and to enjoy opportunities throughout their

life.

As part of the latest study, the trust surveyed more than 17,000 schoolchildren aged 7 to 16.It found

that 85.5 per cent of pupils had their own mobile phones, compared with 72.6 per cent who had their

own books.Among children in Key Stage 2-aged 7 to 11-79.1 per cent had a mobile compared with

72.7 per cent who had access to books.__5__  

A．It fuels fears over a drop in reading.

B．Family encouragement is essentially important too.

C．Children are more likely to own a mobile phone than a book

D．Reading activities at home has significant positive influences.

E．That could increase children's chances of doing well at school.

F．The findings cause concerns over the effect of modern technology on young people.

G．Children from richer home literacy environments show higher levels of reading knowledge.

简述社会保障基金管理的原则。

GPWS方式2警告提示机组：（）。

A.过大的下降率

B.过大的地形接近率

C.起飞掉高度

D.非着陆状态下的净空不足