小明在一幅比例尺为1：6 000 000的地图上，量得他所在城市与北京之间的图上

船舶垂直装设两盏及以上的号灯时，安装两盏以上号灯时，其间距应（）。

为了使门窗洞口和墙垛等处的砖符合模数，满足上下错缝的要求，应采用的施工工艺过程是( )。

A．抄平防线

B．盘角挂线

C．摆砖

D．立皮数杆

Modern life is impossible without travelling. The fastest way of travelling is by plane. With a modern airline you can travel in one day to places which it took a month or more to get to hundred years ago.

Travelling by train is slower than by plane, but it has its advantages(便利). You can see the country you are travelling through. Modern trains have comfortable seats and dining-cars. They make even the longest journey enjoyable.

Some people prefer to travel by sea when possible. There are large liners and river boats. You can visit many other countries and different parts of your country on them. Ships are not so fast as trains or planes, but travelling by sea is a very pleasant way to spend a holiday.

Many people like to travel by car. You can make your own timetable. You can travel three or four hundred miles or only fifty or one hundred miles a day, just as you like. You can stop wherever you wish where there is something interesting to see, at good restaurant where you can enjoy a good meal, or at a hotel to spend the night. That is why travelling by car is popular for pleasure trips, while people usually take a train or plane when they are travelling on business.

小题1:From the passage, we know the fastest way of travelling is          .

A．by train

B．by sea

C．by plane

D．by car小题2:If we travel by car, we can           .

A．make the longest journey enjoyable

B．travel to a very far place in several minutes

C．make our own timetable

D．travel only fifty or one hundred miles a day小题3:When people travel on business, they usually take               .

A．a plane or a car

B．a car or a boat

C．a boat or a train

D．a train or a plane小题4:How many ways of travelling are mentioned in the passage?

A．Four

B．Three

C．Two

D．Six

最快的细菌计数方法是（）。

A.显微镜直接计数法

B.MPN法

C.倾注平板计数法

D.微菌落快速计数法

E.表面涂布计数法

Insurance is the sharing of (1) . Nearly everyone is exposed (2) risk of some sort. The house owner, for example, knows that his (3) can be damaged by fire; the ship owner knows that his vessel may be lost at sea; the breadwinner knows that he may die by (4) and (5) his family in poverty. On the other hand, not every house is damaged by fire or every vessel lost at sea. If these persons each put a (6) stun of money into a pool, there will be enough to (7) the needs of the few who do suffer (8) . In other words the losses of the few are met from the contributions of the (9) . This is the basis of (10) . Those who pay the contributions are known as (11) and those who administer the pool of the contributions as insurer.
The (12) for an insurance naturally depends on how the risk is to happen as suggested (13) past experience. If the companies fix their premiums too (14) , there will be more competition in their branch of insurance and they may lose (15) . On the other hand, if they make the premiums too low, they will not have (16) and may even have to drop out (17) business. So the ordinary forces of supply and (18) keep premiums at a proper (19) to both insurers and those who (20) insurance.