随机变量Y～B（n，p），且E（Y）=3.6，D（Y）=2.16，则（ ） A．n

患者男，36岁，3个月前因外伤一上前牙脱落。口腔检查：缺失，间隙正常，牙槽嵴无明显吸收。缺失，间隙正常，牙槽嵴无明显吸收。牙冠1/2缺损，已露髓，探稍敏感，叩诊阴性，无松动。左上前牙牙龈轻度红肿，易出血，可见菌斑及牙石。余牙未见异常。下列关于金瓷冠牙体预备的要求正确的是（）

A．切端磨除2mm

B．唇侧磨除1mm

C．唇侧龈边缘放龈上

D．唇侧龈边缘位于龈沟底

E．牙体预备分次磨除

下列各句中，加粗的成语使用不恰当的一句是[ ]

A．叶君健先生在创作上决不渲染离奇的情节去哗众取宠，而是坚持朴实的“白描”，被西方称之为“大师的写法”。

B．清代著名诗人龚自珍性格傲岸，对权贵从不阿谀奉承，对一般人也都侧目而视，因此遭到很多人的嫉恨。

C．一位专家直言，最低工资标准的调整应该由地方政府结合各地区的物价指数和经济发展水平来相机行事。

D．成龙、李连杰在发言中都说两人的合作越来越顺，他们惺惺相惜，在镜头前紧紧拥抱以示合作非常愉快。

WHEN an Iraqi journalist threw a shoe at former US President George W.Bush at a news conference last December,the president’s bodyguards quickly moved to protect him.

Those bodyguards were from the US Secret Service.Their job is to protect the president.Now America’s first black president Barack Obama also has the same people at his side.Here are some details about these mysterious men and women.

History

◇The Secret Service is known today for protecting public officials and their families.

However,when it began in 1865,it was started to protect money.A third to a half of all US money during the Civil War was fake (假的).President Abraham Lincoln created the United States Secret Service to find those responsibly.

◇The first 25 presidents had no special protection.That changed after President William Mckinley was murdered in 1901.

Who gets protection?

About 30 people get full-time protection in the United States (more in an election year).

Included are:

◇Presidents and vice-presidents and their wives,for up to 10 years after leaving office,and their children up to age 16.Anyone can decline protection after leaving office.Richard Nixon did.  ◇Candidates for president and vice-president,their wives and children at a cost of $500,000 a month for 30-plus special agents (特工).

◇The Secretary of State,National Security Adviser and others.The Secret Service also protects 80 to 200 visiting foreign political leaders every year.

Getting around

Rules for president

◇Limousines (豪华轿车) that can withstand a missile are used.

◇Entering and exiting are never done on a street.

◇Exact travel plans are kept secret.

◇Bulletproof reading stands for speeches are used.

Agent’s task

◇Teach the president how to wave and move.

◇Test his food for poison.

◇Use special radio channels for the police and the Secret Service.

◇Use X-ray checks before allowing entry to secure areas,and search bags.

◇Check lists of hundreds of people known to be dangerous.

◇Keep files on thousands of people who have made even vague threats.

◇Be part of counter-sniper (反狙击) teams.

小题1:What’s the purpose of writing the passage?

A．To tell us how to be a bodyguard.

B．To introduce the US Secret Service to us.

C．To give us some information about US

presidents.

D．To inform us of the incident at a news conference. 

小题2:Which is the special agent’s task according to

the US Secret Service?

A．Have dinner with the president’s family.

B．Teach the president to behave politely in

public.

C．Keep a record of possible murderers.

D．Check people carrying bags with X-ray.小题3:What do you know about the US Secret

Service from the passage?

A．It is made up of 30 people.

B．It protects only US presidents.

C．It is responsible for the safety of all

Americans.

D．It was created to protect money.小题4: Which of the following can be inferred from

the passage?

A．The bodyguards from the US Secret

Service have no privacy.

B．The US Secret Service bodyguards’ job is

full of challenges.

C．No one knows the exact travel plan of

presidents.

D．Every president in American history has a bodyguard. 

运用收益法评估房地产时，房地产总费用通常包括( )。

A．管理费+折旧费+保险费+税金
B．管理费+折旧费+保险费+税金+空房损失费
C．管理费+维修费+保险费+税金
D．管理费+维修费+折旧费+保险费+税金+空房损失费

发射枪式抛绳设备时，持枪者应站在抛射盒的后方，枪口瞄准目标，水平仰角一般为30°左右，手指扣动扳机，触发抛射药筒，引发火箭。（）