内旋转(internal rotation)

胎头到达中骨盆为适应骨盆纵轴而旋转，使其矢状缝与中骨盆及骨盆出口前后径相一致的动作称内旋转。

以下哪个标识符指的是可见性属性（）。

A:_alpha B:_visible C:_width D:_rotation

旋转设计 rotation design

Karl Von Linne (or Linnaeus, as he is widely known) was a Swedish biologist who devised the system of Latinised scientific names for living things that biologists use to this day. When he came to (1) people into his system, he put them into a group called Homo--and Linne’s hairless fellow humans are still known biologically as Homo sapiens. (2) the group originally had a second member, Homo troglodytes. It lived in Africa, and the pictures show it to be covered (3) hair.
Modern (4) are not as generous as Linne in welcoming other species into Man’s lofty (5) , and the chimpanzee is now referred to (6) Pan troglodytes. But Pan or Homo, there is no (7) that chimps are humans’ nearest living relatives, and that if the secrets of what makes humanity special are ever to be (8) , understanding why chimps are not people, nor people chimps, is a crucial part of the process. That, in turn, means looking at the DNA of the two species, (9) it is here that the (10) must originate.
One half of the puzzle has been (11) for several years: the human genome was published in 2001. The second has now been added, with the announcement in this week’s Nature (12) the chimpanzee genome has been sequenced as well. For those expecting (13) answers to age-old questions (14) , the publication of the chimp genome may be something of an (15) . There are no immediately obvious genes-present in one, but not the other-that account for such characteristic human (16) as intelligence or even hairlessness. And (17) there is a gene connected with language, known as FOXP2, it had already been discovered. But although the preliminary comparison of the two genomes (18) by the members of the Chimpanzee Sequencing and Analysis Consortium, the multinational team that generated the sequence, did not (19) , any obvious nuggets of genetic gold, it does at least show where to look for (20) .

Read the following text. Choose the best word (s) for each numbered blank and mark A, B, Car D on ANSWER SHEET 1. 7（）

A:suspension B:suspicion C:rotation D:doubt

Karl Von Linne (or Linnaeus, as he is widely known) was a Swedish biologist who devised the system of Latinised scientific names for living things that biologists use to this day. When he came to (1) people into his system, he put them into a group called Ho mo--and Linne’ s hairless fellow humans are still known biologically as Homo sapiens. (2) the group originally had a second member, Homo troglodytes. It lived in Africa, and the pictures show it to be covered (3) hair.
Modern (4) are not as generous as Linne in welcoming other species into Man’ s lofty (5) , and the chimpanzee is now referred to (6) Pan troglodytes. But Pan or Homo, there is no (7) that chimps are humans’ nearest living relatives, and that if the secrets of what makes humanity special are ever to be (8) , understanding why chimps are not people, nor people chimps, is a crucial part of the process. That, in turn, means looking at the DNA of the two species, (9) it is here that the (10) must originate.
One half of the puzzle has been (11) for several years: the human genome was published in 2001. The second has now been added, with the announcement in this week’s Nature (12) the chimpanzee genome has been sequenced as well. For those expecting (13) answers to age-old questions (14) , the publication of the chimp genome may be something of an (15) There are no immediately obvious genes--present in one, but not the other--that account for such characteristic human (16) as intelligence or even hairlessness. And (17) there is a gene connected with language, known as FOXP2, it had already been discovered. But although the preliminary comparison of the two genomes (18) by the members of the Chimpanzee Sequencing and Analysis Consortium, the multinational team that generated the sequence, did not (19) any obvious nuggets of genetic gold, it does at least show where to look for (20) .

3（）

A:suspension B:suspicion C:rotation D:doubt

A．hurricane is a fiercely powerful, rotating (旋转的) form of tropical storm that can be 124 to 1, 240 miles in diameter. The term hurricane is derived from Hurican, the name of a native American storm god. Hurricanes are typical of a calm central region of low pressure between 12 to 60 miles in diameter, known as the eye. They occur in tropical regions. Over its lifetime, one of these storms can release as much energy as 10,000 nuclear bombs.
The seed for hurricane formation is a cluster (聚焦) of thunderstorms over warm tropical waters. Hurricanes can only form and be fed when the sea-surface temperature exceeds 27℃ and the surrounding atmosphere is calm. These requirements are met between June and November in the northern part of the world.
Under these conditions, large quantities of water evaporate (蒸发) and condense (冷凝) into clouds and rain-releasing heat in the process. It is this heat energy, combined with the rotation of the Earth, that drives a hurricane.
When the warm column of air from the sea surface first begins to rise, it causes an area of low pressure. This in turn creates wind as air is drawn into the area. This spinning wind drags up more moist air from the sea surface in a process that strengthens the storm. Cold air falls back to the ocean surface through the eye and on the outside of the storm.
Initially, when wind speeds reach 23 miles per hour, these mild, wet and grey weather systems are known as depressions, or low air pressure. Hurricane Katrina formed in this way over the south-eastern Bahamas on 23 August 2005. Katrina has had a devastating impact on the Gulf Coast of the US, leaving a disaster zone of 90,000 square miles in its wake (尾迹)—almost the size of the UK. Thousands have been killed or injured and more than half a million people have become homeless in a humanitarian (人道主义的) crisis of a scale not seen in the US since the Great Depression. The cost of the damage may top $100 billion.
When the warm air from the sea surface begins to rise, it

A:creates an area of low pressure. B:supplies cold air to the eye of a hurricane. C:increases the sea-surface temperature. D:strengthens the rotation of the earth.

{{B}}第三篇{{/B}}

When the warm air from the sea surface begins to rise, it ______.

A:creates an area of low pressure B:supplies cold air to the eye of a hurricane C:increases the sea-surface temperature D:strengthens the rotation of the earth

第二篇Hurricane(飓风)Katrina 　　A hurricane is a fiercely powerful,rotating(旋转的)form of tropical storm that can be 124 to 1,240 miles in diameter.The term hurricane is derived from Hurican,the name of a native American storm god.Hurricanes are typical of a calm central region of low pressure between 12 to 60 miles in diameter,known as the eye.They occur in tropical regions.Over its lifetime,one of these can release as much energy as 10,000 nuclear bombs. 　　The seed for hurricane formation is a cluster(聚集)of thunderstoms over warm tropical waters.Hurricanes can only form and be fed when the sea-surface temperature exceeds 27℃ and the surrounding atmosphere is calm.These requirements are met between June and November in the northern part of the world. 　　Under these conditions,large quantities of water evaporate(蒸发)and condense(冷凝)into clouds and rain-releasing heat in the process.It is this heat energy,combined with the rotation of the Earth,that drives a hurricane. 　　When the warm column of air from the sea surface first begins to rise,it causes an area of low pressure.This in turn creates wind as air is drawn into the area.This spinning wind drags up more moist air from the sea surface in a process that strengthens the storm.Cold air falls back to the ocean surface through the eye and on the outside of the storm. 　　Initially,when wind speeds reach 23 miles per hour,these mild,wet and grey weather systems are known as depressions,or low air pressure.Hurricane Katrina formed in this way over the south-eastern Bahamas on 23 August 2005.Katrina has had a devastating impact on the Gulf Coast of the US,leaving a disaster zone of 90,000 square miles in its wake(尾迹)-almost the size of the UK.Thousands have been killed or injured and more than half a million people have become homeless in a humanitarian(人道主义的)crisis of a scale not seen in the US since the Great Depression.The cost of the damage may top $100 billion. When the warm air from the sea surface begins to rise,it

A:creates an area of low pressure. B:supplies cold air to the eye of a hurricane. C:increases the sea-surface temperature. D:strengthens the rotation of the earth.