.脑干属于（） A．神经中枢 B．中枢神经系统 C．大脑 D．大脑皮层

对红血病的诊断有参考价值的细胞化学染色是（）

A.糖原染色

B.特异性酯酶染色和NaF抑制试验

C.中性粒细胞碱性磷酸酶染色

D.氯醋酸AS-D萘酚酯酶染色

E.过氧化物酶染色

关于砂的检验批次，下列叙述错误的是( )。

A．以同一产地、同一规格每400m³或600t为一验收批，不足400m³或600t也应按一批计，每一验收批取样一组(20kg)

B．当质量比较稳定、进料量较大时，可定期进行检验

C．取样部位应均匀分布，在料堆上应从6个不同部位抽取等量试样(每份15kg)

D．取样时用四分法缩至20kg，取样前先将取样部位表面铲除

能直接作用于体温调节中枢的物质是（）

A.病毒

B.细菌毒素

C.坏死物质

D.肿瘤坏死因子

E.抗原抗体复合物

经光学加工的隐形眼镜片

阅读理解。

     The United States government has started a website to help children think critically about the advertising

that is aimed at them. The new site is called Admongo. It claims to provide visitors with an "aducation"

through games and other entertainment.

     A cartoon man dressed in old time pilot clothing greets visitors to Admongo. "Call me Haiz" he says upon

arrival in a rocket ship that opens up with a crazy world inside it. Dabce plays in the background as Haiz tells

visitors that they need to learn about advertising.

     The Admongo website is aimed at children eight to twelve years old. Its inventors say that is the age kids

develop their critical thinking abilities. Kids that age are also a big market for advertisers.

     The idea behind Admongo is to teach children three things: to identify the advertiser, to know what the

advertiser is really saying, and to know what the advertisement is trying to get the child to do.

     Children learn these things through a video game. They create their own game character. They can choose

different skin colors, hairstyles, eye and mouth shapes. Then they begin a trip through ad- land. They take a

walk through the neighborhood. They seek out the advertising and capture treasures. There are ads on buses

and billboards. The players have to find all the marketing in the neighborhood before they can move on to the

next level.

     The Admongo game takes players inside a home, to the advertising studio and everywhere else ads can be

found. It is a complete exploration of the world of marketing.

     One such area is food marketing. The Federal Trade Commission says it is an especially big business. The

F. T. C. estimates that food, drink and fast-food restaurants spent more that one and a half billion dollars on

advertising to young people in 2009.

     The F. T. C. says children are important for three reasons. They buy products. They influence parents and

caregivers to buy. And they are the future adult buyers of the products.

     A recent study says most advertising aimed at children is for foods of the lowest nutritional value. First

Lady Michelle Obama has said she would like to see advertisers marketing healthy foods for children.

1. What is the best title of the text?

A. A website aimed at children's food

B. The cartoon guide named "Haiz"

C. An"aducation" website for children

D. A popular online video game

2. Why did the government start the website?

A. To advertise the video game for children.

B. To help children know about advertising.

C. To attract the biggest market of buyers.

D. To sell the products of its company.

3. What can players do in the website game?

A. They can play video games in the trip.

B. They can travel to a supermarket.

C. They can choose hairstyles for their own character. 

D. They can eat in a fast-food restaurant.

4. Children are important for advertising because they ____.

A. are the most important for society

B. are the most potential buyers

C. are easily influenced by ads 

D. are easily affected by low-quality products

5. According to Michelle Obama, lots of foods advertised for children are ________.

A. of low quality

B. yummy

C. of high nutrition

D. healthy