引起副溶血性弧菌食物中毒的好发食品是 A．家庭自制发酵食品 B．鱼、虾、蟹、贝

阅读理解。

     Sitting on exercise balls brings more than a smile to students and teachers.

     Some fourth-graders at Conrad Weiser West Elementary School in Womelsdorf love their new

chairs--probably because they're not really chairs at all. The kids are sitting on the air-filled balls. But

different from those just for exercise, these have small legs that keep them from rolling. Sitting on a chair

all day in school can make anyone want to move around. So, more and more teachers are letting students

have a ball. By using exercise balls instead of common chairs, teachers find students' posture (姿势) and

attention improved.

     Dotti Pownall, a fifth-grader teacher in West Virginia, has been using balls as chairs since December

2008."The students love them." she says. Pownall took a survey of her students. She found that 80 percent,

thought sitting on the balls helped them concentrate (专注) better: "Besides, they're fun," says Pownall.

     According to WittFitt,  a company that has sold balls to more than 200 schools, they can improve kids'

posture and classroom behavior.

     Exercise ball chairs are getting popular in classrooms, from preschool to college. Some adults (成人)

even use them at work. Lisa Witt felt so strongly about the use of balls as chairs that she started WittFitt.

She said the company not only encourages the use of balls but also educates teachers and students on how

to use them."We sell balls in 24 states in America, three provinces in Canada and Japan." says Witt.

1. Sitting on exercise balls can ______.

A. improve students' attention

B. make students smarter

C. keep students moving around

D. help students become fit

2. According to the passage, the company WittFitt ______.

A. began to produce balls in 2008

B. sells balls in 24 countries

C. was set up by Lisa Witt

D. is famous around the world

3. It can be seen from the passage that ______.

A. exercise balls have no legs

B. Pownall works as a teacher

C. students hate exercise balls

D. exercise balls are filled with sand

4. The passage mainly tells us about ______.

A. the shape of exercise balls

B. the use of exercise balls

C. the number of exercise balls

D. the inventor of exercise balls

熊去氧胆酸与鹅去氧胆酸结构的区别是（）

A.羟基数目、位置相同、构型不同

B.羟基数目、构型相同、位置不同

C.羟基数目、位置、构型均不同

D.羟基数目相同、位置、构型不同

E.羟基构型相同、数目、位置不同

The following are the world-renewed attractions in London, so don’t miss them while touring there.

Shakespeare’s Globe

Shakespeare’s Globe, which officially opened in 1997, is a reconstruction of the Globe Theatre, built in 1599, and brings Shakespeare’s world to life. As a visitor to the exhibition，you’ll discover how shows were produced in the theatres during Shakespeare’s time. The guide-storytellers take you on a fascinating half-hour tour.

Price: Adult ￡9.00；Child(5-15) ￡6.50;  Student ￡7.50;  Under 5 FREE.

The Tower of London

The tower, nearly 100 feet high, with walls 15 feet thick, was built in the early 1080s. King Henry Ⅲ made this tower his home. King Edward V and his younger brother were murdered inside by their uncle. Queen Elizabeth I was shut up in the tower for two months by her half sister Mary who felt that her throne(王位)was being threatened(威胁). In 1603, part of the tower became a museum.

Price: Adult ￡16.50; Child (5-15) ￡9.50; Under 5 FREE; Student ￡13.50; Family (two adults with three children) ￡46.00.

Banqueting(宴会) House

Banqueting House is the remains of Whitehall Palace which was built in 1529 and was home to the English kings. It was destroyed by fire. Famous for its architecture and painting, the building is also known for being the scene of Charles I’s execution(处决)。

Price: Adult ￡4.50; Child ￡2.25; Student (with ID) and senior citizen (60+) ￡3.00; Under 5 FREE.

Tower Bridge Exhibition

Tower Bridge has stood over the River Thames in London since 1894 and is one of the finest, most recognizable bridges in the world. At the Tower Bridge Exhibition you can enjoy breath-taking views from the high-level walkways and learn about the history of the bridge and how it was built. You can then visit the Victorian engine rooms, home to the original steam engines that used to power the bridge.

Price: Adult￡6.00; Child (5-15) ￡3.00; Under 5 FREE; Senior citizen(60+) ￡4.50; Student￡4.50.

小题1:Which of the following places has the longest history?

A．Whitehall Palace.

B．The Globe Theatre.

C．The Tower of London.

D．Tower Bridge.小题2:If two parents with their 4-year-old son visit Tower Bridge, they should pay      .

A．￡12

B．￡15

C．￡9

D．16小题3: Queen Elizabeth I was shut up in the tower for two months by Mary mainly because        .

A．Mary didn’t like her

B．she tried to steal Mary’s treasure

C．Mary feared she would become the Queen

D．she intended to murder Mary小题4:How many places used as a king’s home are mentioned in this passage?

A．One.

B．Two.

C．Three.

D．Four.

肾组织免疫荧光检查时，在肾小球内找不到免疫球蛋白和补体沉积的是（）。

A.弥漫性膜增生性肾小球肾炎

B.弥漫性膜性肾小球肾炎

C.微小病变性肾小球肾炎

D.弥漫性系膜增生性肾小球肾炎

E.肺出血。肾炎综合征

新产后有余血浊液从子宫通过 * * 排出，称为"恶露"，一般约持续（）

A.1周

B.2周

C.3周

D.4周

E.7周