Perisinusoidal space

Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural difference, not an economic one. Knowing your own psychological space needs is important because they strongly affect your choices, including, for example, the number of bedrooms in the home. If you were brought up in a two child family and both you and your sister or brother had your own bedrooms, the chances are if you have two children or more, that you also will offer separate bedrooms for them. In America, for example, they train people to want to have their own rooms by giving them their own rooms when they are babies. This is very unusual in the world. In many other countries, the baby sleeps in the same bed with his parents or in bed near them.
The space in the home also shows a lot about psychological space needs. Some families gather closer to each other and the size of their house has nothing to do with it. Others have separate little corners where family members go to be alone.
Although it is true that psychological space needs are not decided by economic reasons, they sometimes have to be changed a little because of economic pressure. It is almost impossible, however, to completely change your psychological space needs.
Some families gather closer to each other at home than others because ______.

A:they have limited living space B:they are brought up in a large family C:it satisfies their psychological space needs D:the children in the family sleep in the same bed with their parents

Denture space

Shipping Space （）

len(space(35)-space(15))的结果为______。

Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural difference, not an economic one. Knowing your own psychological space needs is important because they strongly affect your choices, including, for example, the number of bedrooms in the home. If you were brought up in a two child family and both you and your sister or brother had your own bedrooms, the chances are if you have two children or more, that you also will offer separate bedrooms for them. In America, for example, they train people to want to have their own rooms by giving them their own rooms when they are babies. This is very unusual in the world. In many other countries, the baby sleeps in the same bed with his parents or in bed near them.
The space in the home also shows a lot about psychological space needs. Some families gather closer to each other and the size of their house has nothing to do with it. Others have separate little corners where family members go to be alone.
Although it is true that psychological space needs are not decided by economic reasons, they sometimes have to be changed a little because of economic pressure. It is almost impossible, however, to completely change your psychological space needs.
The best title for this passage is

A:American Way of Living B:Psychological Space C:Space Needs in Different Countries D:Psychological Space and Economic Pressure

Space travel is definitely bad for astronauts’ bones, reducing their bone density after only a month of weightlessness, according to French research published on Friday.
Laurence Vico and his fellow workers at St Etienne University called for more research into the effects of microgravity, after their study of 15 astronauts from the Russian MIR station showed bone loss continued throughout space flights.
"Bone loss was especially striking in four astronauts, " the scientists reported in the Lancet Medical Journal.
They measured the Bone Mineral Density(BMD) of bones in the forearm and lower leg of the astronauts who had spent one to six months in space.
The BMD loss was significant in the tibia of the lower leg, a weight-bearing bone, but barely changed in the radius of the forearm. "Our results indicate the need to investigate not only different bones, but also different areas of the same bone since not all sites of the skeleton are similarly affected by space conditions, " they added.
Without gravity the body isn’t bearing any weight so there is no need for calcium which makes bones strong, and it becomes empty into the bloodstream.
The research team suggested in future scientists should try to determine if the loss of bone density was only on weight-bearing bones on longer flights, also the possible recovery after returning to Earth.
What cause the BMD loss to astronauts according to this passage

A:The food they eat in space. B:The drinks they take in space. C:The temperature in space. D:The gravity in spac

Passage 1
Not everyone in the world requires the same amount of living space.The amount of space a person needs around him is a cultural difference,not an economic one.Knowing your own psychological space needs is important because they strongly affect your choices,including,for example,the number of bedrooms in the home.If you were brought up in a two child family and both you and your sister or brother had your own bedrooms,the chances are if you have two children or more,that you also will offer separate bedrooms for them.In America,for example,they train people to want to have their own rooms by giving them their own rooms when they are babies.This is very unusual in the world.In many other countries,the baby sleeps in the same bed with his parents or in bed near them. The space in the home also shows a lot about the psychological space needs.Some families gather closer to each other and the size of their house has nothing to do with it.Others have separate little corners where family members go to be alone. Although it is true that the psychological space needs are not decided by economic reasons,they sometimes have to be changed a little because of economic pressure.It is almost impossibe,however,to completely change your psychological space needs.

Some families gather closer to each other at home than others because （）.

A:they have limited living space B:they are brought up in a large family C:it satisfies their psychological space needs D:the children in the family sleep in the same bed with their parents