前牙唇侧楔状缺损，应选用的修复方法是（） A.酸蚀-复合树脂修复 B.3/4冠修复

阅读理解。

     Societies all over the world name places in similar ways. Quite often there is no official naming ceremony

but places tend to be called names as points of reference by people. Then an organized body steps in and gives

the place a name. Frequently it happens that a place has two names: One is named by the people and the other

by the government. As in many areas, old habits died hard, and the place continues to be called by its unofficial

name long after the meaning is lost.

     Many roads and places in Singapore (新加坡) are named in order that the pioneers will be remembered by

future generations. Thus we have names such as Stamford Road and Raffles Place. This is in keeping with

traditions in many countries-in both the West and the East.

     Another way of naming places is naming them after other places. Perhaps they were named to promote

friendships between the two places or it could be that the people who used to live there were originally from

the places that the roads were named after. The mystery is clearer when we see some of the roads named in

former British bases. If you step into Selector Airbase you will see Piccadilly Circus-obviously named by some

homesick Royal Air Force personnel.

     Some places were named after the activities that used to go on at those places. Bras Basah Road is an

interesting example, "Base Basah" means "wet rice" in Malay (马来语). Now why would anyone want to name

a road "Wet Rice Road"? The reason is simple. During the pioneering days, wet rice was laid out to dry along

this road.

     A few roads in Singapore are named by their shapes. There is "Circular Road" for one. Other roads may

have part of their names to describe their shapes, like "Paya Lebar Crescent". This road is called a crescent (月

牙) because it begins on the main road, makes a crescent and comes back to join the main road again.

1. We learn from Paragraph 1 that _____.

A. many places tend to have more than one name

B. the government is usually the first to name a place

C. a ceremony will be held when a place is named

D. people prefer the place names given by the government

2. What does the underlined phrase "die hard" in Paragraph 1 probably mean?

A. Change suddenly.

B. Change significantly.

C. Disappear very slowly.

D. Disappear mysteriously.

3. Which of the following places is named after a person?

A. Raffles Place.

B. Selector Airbase.

C. Piccadilly Circus.

D. Paya Lebar Crescent.

4. Bras Basah Road is named _____.

A. after a person

B. after a place

C. by its shape

D. after an activity

5. What can be inferred from the passage?

A. The way Singaporeans name their places is unique.

B. Young Singaporeans have forgotten the pioneers.

C. Some place names in Singapore are the same as in Britain.

D. Some places in Singapore are named for military purposes.

股份有限公司采用溢价发行股票方式筹资，则其“股本”科目应记录的金额为( )。

A．实际收到的款项
B．实际收到的款项减去发行手续费、佣金等发行费用
C．股票市价与股份总数的乘积
D．股票面值与股份总数的乘积

单位按规定销毁会计档案时，应当由档案部门和财务会计部门共同派员监销。( )

在-48V的直流供电的通信系统中，为什么所有的设备的正极接地？