18天复习4天在看机经...结果换狗了...悲剧710...

冷凇凌

如果是Y轴的话 斜率不存在 更不可能是C了

草本植物

我弱弱的问一句..0是3的倍数么? --ll

lorein

楼主已经是牛人了~~~沾点仙气儿~保佑我能上700

66小丫头

Good!!!!沾点楼主的福气~~~

stephnie

第二篇应该是GWD的

stephnie

原文在这里


In most earthquakes the Earth’s crust cracks likeporcelain, Stress builds up until a fracture forms at a depth of a few kilometers and the crust (5) slips to relieve the stress. Some earthquakes, however, take place hundreds of kilometers down in the Earth’s mantle, where high pressure makes rock so ductile that it flows instead of (10) cracking, even under stress severe enough to deform it like putty. How can there be earthquakes at such depths? That such deep events do occur has been accepted only since 1927 when the seismologist Kiyoo Wadati convincingly demonstrated their existence. Instead of comparing the arrival times of seismic waves at different locations, as earlier researchers had done, Wadati relied on a time difference between the arrival of primary(P) waves and the slower secondary(S) waves. Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.

For most earthquakes, Wadati discovered, the interval was quite short near the epicenter; the point on the surface where shaking is strongest. For a few events, however, the delay was long even at the epicenter. Wadati saw a similar pattern when he analyzed data on the intensity of shaking. Most earthquakes had a small area of intense shaking, which weakened rapidly with increasing distance from the epicenter, but others were characterized by a lower peak intensity, felt over a broader area. Both the P-S intervals and the intensity patterns suggested two kinds of earthquakes: the more common shallow events, in which the focus lay just under the epicenter, and deep events, with a focus several hundred kilometers down.

The question remained: how can such quakes occur, given that mantle rock at a depth of more than 50 kilometers is too ductile to store enough stress to fracture? Wadati’s work suggested that deep events occur in areas (now called Wadati-Benioff zones) where one crustal plate is forced under another and descends into the mantle. The descending rock is substantially cooler than the surrounding mantle and hence is less ductile and much more liable to fracture.



------------------------------------------------------------------


GWD-24-30.



The author’s explanation of how deep events occur would be most weakened if which of the following were discovered to be true?

A.Deep events are far less common than shallow events.

B.Deep events occur in places other than where crustal plates meet.

C.Mantle rock is more ductile at a depth of several hundred kilometers than it is at 50 kilometers.

D.The speeds of both P and S waves are slightly greater than previously thought.

E.Below 650 kilometers earthquakes cease to occur.

-------------------------------------------------------------------

GWD-24-31.

Information presented in the passage suggests that, compared with seismic activity at the epicenter of a shallow event, seismic activity at the epicenter of a deep event is characterized by

A.shorter P-S intervals and higher peak intensity

B.shorter P-S intervals and lower peak intensity

C.longer P-S intervals and similar peak intensity

D.longer P-S intervals and higher peak intensity

E.longer P-S intervals and lower peak intensity.

------------------------------------------------------------------

GWD-24-32.

The passage supports which of the following statements about the relationship between the epicenter and the focus of an earthquake?

A.P waves originate at the focus and S waves originate at the epicenter.

B.In deep events the epicenter and the focus are reversed.

C.In shallow events the epicenter and the focus coincide

D.In both deep and shallow events the focus lies beneath the epicenter

E.The epicenter is in the crust, whereas the focus is in the mantle.

----------------------------------------------------------------

GWD-24-33.

The passage suggests that which of the following must take place in order for any earthquake to occur?

1. Stress must build up.

2. Cool rock must descend into the mantle.

3. A fracture must occur




A.1 only

B.2 only

C.3 only

D.1 and 3 only

E.1, 2, and 3

------------------------------------------------------------------

Q34：The passage is primarily concerned with



A.demonstrating why the methods of early seismologists were flawed

B.arguing that deep events are poorly understood and deserve further study

C.defending a revolutionary theory about the causes of earthquakes and methods of predicting them

D.discussing evidence for the existence of deep events and the conditions that allow them to occur

E.comparing the effects of shallow events with those of deep events

--------------------------------------------------------------------

Q35：The author uses the comparisons to porcelain and putty in order to



A.explain why the Earth’s mantle is under great pressure

B.distinguish the earthquake’s epicenter from its focus

C.demonstrate the conditions under which a Wadati-Benioff zone forms

D.explain why S waves are slower than P waves

E.illustrate why the crust will fracture but the mantle will not

------------------------------------------------------------------

Q36：It can be inferred from the passage that if the S waves from an earthquake arrive at a given location long after the P waves, which of the following must be true?



A.The earthquake was a deep event.

B.The earthquake was a shallow event.

C.The earthquake focus was distant.

D.The earthquake focus was nearby.

E.The earthquake had a low peak intensity.

------------------------------------------------------------------

Q37：The method used by Wadati to determine the depths of earthquakes is most like which of the following?





A.Determining the depth of a well by dropping stones into the well and timing how long they take to reach the bottom

B.Determining the height of a mountain by measuring the shadow it casts at different times of the day

C.Determining the distance from a thunderstorm by timing the interval between the flash of a lightning bolt and the thunder it produces

D.Determining the distance between two points by counting the number of paces it takes to cover the distance and measuring a single pace

E.Determining the speed at which a car is traveling by timing how long it takes to travel a known distance

soda小怡

麻烦LZ确认  逻辑狗修桥的题 哪个版本比较靠谱？

45、两座桥
V1（from raistlin422）720有一题是strengthen：讲某国有两座桥，N和W，N要repair，于是只能走W。这个国家觉得过路费收的比原来少了，于是要在W桥上比原来基础上多收20%的费用。原文说此举不会影响到驾车人的选择，问strengthen。我选的是“开车的对这点涨价没所谓。”

考古
V1填空题：一个城市的居民要么用南桥要么用北桥，南桥要修复，市长准备在修复期间免南桥过桥费，为了不大幅度减少政府的过桥费收入，市长提议将北桥的过桥费增加，市长说这个提议会达到效果因为——选了一个人们在桥之间的转换不方便
V2一个填空题前面没细看，是说最近过桥费下降了，最低25什么的，还有个30%，所以要提高Revenue,要提高过桥费，但是过这个桥的人并不会减少，给了一个原因，加了个and，填后面的。人们如果在桥之间转换会导致非常大的不便。
V3说一个地方有两个桥 NORTH SOUTH  NORTH 要维修，所以过桥费少收25%
为了弥补这个损失SOUTH 的就多收了20%
问假设 答案就选哪个能保证SOUTH 通行量的 就是加了钱 也不会有车不走哪桥，确定
V4一个地方有两个桥貌似叫north-bridge and south-bridge. 北桥要大修，同时不收过桥费了（toll这个词）；另一方面政府不想因为这个不收费了，降低总体收入，因此南桥的toll要涨价。问support吧也可能是assumption. 只记得俩选项：1，北桥修理，南桥车流量增大。2，南桥多的钱可以弥补北桥修桥的损失。
V5南桥北桥这道，题干正确，答案中两个我比较不确定，一个是北桥的收费直接补充到南桥的维修上，一个是因为换桥走特别不方便，人们轻易不会换桥走。犹豫了一会，我最后还是选了第二个，其它选项都不是很相关。
V6到一个地方上班，必须经过两个侨中的一个。其中一个要返修，政府决定停止收费。但为了保证总的费用不变，要增加另外一个桥的TOLL。政府知道更多的人要使用后面的桥，问什么可以使政府的计划成功。选大家都不会改变使用的TOLL,否则会很麻烦
V7南北两个桥，南桥在修理，所以政府决定不收过路费，而为了避免overall revenue的损失，在北桥提高收费标准by 20cent。问评价政府能否达到目的的条件吧。 我选的是那些原来过北桥的人不会因为提高收费就不走了。
V8从一个地方到另一个地方只能通过N桥或者S桥，N桥最近要重修，因此收费站不能再使用，为了避免总收入降低，就让S桥收费站涨价，加强为何该措施能成功，选了人们如果在桥之间转换会导致非常大的不便。

tianlingfrl

别这么谦虚行么？多少人GT都准备1年多还最后只能将就个凑合的分数呢~真不知道你是怎么想的~710都悲剧，18天还不算牛人，那我学了半年才600多该怎么了断自己呢？

yueqianchen

原文在这里


In most earthquakes the Earth’s crust cracks likeporcelain, Stress builds up until a fracture forms at a depth of a few kilometers and the crust (5) slips to relieve the stress. Some earthquakes, however, take place hundreds of kilometers down in the Earth’s mantle, where high pressure makes rock so ductile that it flows instead of (10) cracking, even under stress severe enough to deform it like putty. How can there be earthquakes at such depths? That such deep events do occur has been accepted only since 1927 when the seismologist Kiyoo Wadati convincingly demonstrated their existence. Instead of comparing the arrival times of seismic waves at different locations, as earlier researchers had done, Wadati relied on a time difference between the arrival of primary(P) waves and the slower secondary(S) waves. Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.

For most earthquakes, Wadati discovered, the interval was quite short near the epicenter; the point on the surface where shaking is strongest. For a few events, however, the delay was long even at the epicenter. Wadati saw a similar pattern when he analyzed data on the intensity of shaking. Most earthquakes had a small area of intense shaking, which weakened rapidly with increasing distance from the epicenter, but others were characterized by a lower peak intensity, felt over a broader area. Both the P-S intervals and the intensity patterns suggested two kinds of earthquakes: the more common shallow events, in which the focus lay just under the epicenter, and deep events, with a focus several hundred kilometers down.

The question remained: how can such quakes occur, given that mantle rock at a depth of more than 50 kilometers is too ductile to store enough stress to fracture? Wadati’s work suggested that deep events occur in areas (now called Wadati-Benioff zones) where one crustal plate is forced under another and descends into the mantle. The descending rock is substantially cooler than the surrounding mantle and hence is less ductile and much more liable to fracture.



------------------------------------------------------------------


GWD-24-30.



The author’s explanation of how deep events occur would be most weakened if which of the following were discovered to be true?

A.Deep events are far less common than shallow events.

B.Deep events occur in places other than where crustal plates meet.

C.Mantle rock is more ductile at a depth of several hundred kilometers than it is at 50 kilometers.

D.The speeds of both P and S waves are slightly greater than previously thought.

E.Below 650 kilometers earthquakes cease to occur.

-------------------------------------------------------------------

GWD-24-31.

Information presented in the passage suggests that, compared with seismic activity at the epicenter of a shallow event, seismic activity at the epicenter of a deep event is characterized by

A.shorter P-S intervals and higher peak intensity

B.shorter P-S intervals and lower peak intensity

C.longer P-S intervals and similar peak intensity

D.longer P-S intervals and higher peak intensity

E.longer P-S intervals and lower peak intensity.

------------------------------------------------------------------

GWD-24-32.

The passage supports which of the following statements about the relationship between the epicenter and the focus of an earthquake?

A.P waves originate at the focus and S waves originate at the epicenter.

B.In deep events the epicenter and the focus are reversed.

C.In shallow events the epicenter and the focus coincide

D.In both deep and shallow events the focus lies beneath the epicenter

E.The epicenter is in the crust, whereas the focus is in the mantle.

----------------------------------------------------------------

GWD-24-33.

The passage suggests that which of the following must take place in order for any earthquake to occur?

1. Stress must build up.

2. Cool rock must descend into the mantle.

3. A fracture must occur




A.1 only

B.2 only

C.3 only

D.1 and 3 only

E.1, 2, and 3

------------------------------------------------------------------

Q34：The passage is primarily concerned with



A.demonstrating why the methods of early seismologists were flawed

B.arguing that deep events are poorly understood and deserve further study

C.defending a revolutionary theory about the causes of earthquakes and methods of predicting them

D.discussing evidence for the existence of deep events and the conditions that allow them to occur

E.comparing the effects of shallow events with those of deep events

--------------------------------------------------------------------

Q35：The author uses the comparisons to porcelain and putty in order to



A.explain why the Earth’s mantle is under great pressure

B.distinguish the earthquake’s epicenter from its focus

C.demonstrate the conditions under which a Wadati-Benioff zone forms

D.explain why S waves are slower than P waves

E.illustrate why the crust will fracture but the mantle will not

------------------------------------------------------------------

Q36：It can be inferred from the passage that if the S waves from an earthquake arrive at a given location long after the P waves, which of the following must be true?



A.The earthquake was a deep event.

B.The earthquake was a shallow event.

C.The earthquake focus was distant.

D.The earthquake focus was nearby.

E.The earthquake had a low peak intensity.

------------------------------------------------------------------

Q37：The method used by Wadati to determine the depths of earthquakes is most like which of the following?





A.Determining the depth of a well by dropping stones into the well and timing how long they take to reach the bottom

B.Determining the height of a mountain by measuring the shadow it casts at different times of the day

C.Determining the distance from a thunderstorm by timing the interval between the flash of a lightning bolt and the thunder it produces

D.Determining the distance between two points by counting the number of paces it takes to cover the distance and measuring a single pace

E.Determining the speed at which a car is traveling by timing how long it takes to travel a known distance

-- by 会员 stephnie (2010/7/29 22:58:45)

不是这篇
说的是lava

yueqianchen

麻烦LZ确认  逻辑狗修桥的题 哪个版本比较靠谱？

45、两座桥
V1（from raistlin422）720有一题是strengthen：讲某国有两座桥，N和W，N要repair，于是只能走W。这个国家觉得过路费收的比原来少了，于是要在W桥上比原来基础上多收20%的费用。原文说此举不会影响到驾车人的选择，问strengthen。我选的是“开车的对这点涨价没所谓。”

考古
V1填空题：一个城市的居民要么用南桥要么用北桥，南桥要修复，市长准备在修复期间免南桥过桥费，为了不大幅度减少政府的过桥费收入，市长提议将北桥的过桥费增加，市长说这个提议会达到效果因为——选了一个人们在桥之间的转换不方便
V2一个填空题前面没细看，是说最近过桥费下降了，最低25什么的，还有个30%，所以要提高Revenue,要提高过桥费，但是过这个桥的人并不会减少，给了一个原因，加了个and，填后面的。人们如果在桥之间转换会导致非常大的不便。
V3说一个地方有两个桥 NORTH SOUTH  NORTH 要维修，所以过桥费少收25%
为了弥补这个损失SOUTH 的就多收了20%
问假设 答案就选哪个能保证SOUTH 通行量的 就是加了钱 也不会有车不走哪桥，确定
V4一个地方有两个桥貌似叫north-bridge and south-bridge. 北桥要大修，同时不收过桥费了（toll这个词）；另一方面政府不想因为这个不收费了，降低总体收入，因此南桥的toll要涨价。问support吧也可能是assumption. 只记得俩选项：1，北桥修理，南桥车流量增大。2，南桥多的钱可以弥补北桥修桥的损失。
V5南桥北桥这道，题干正确，答案中两个我比较不确定，一个是北桥的收费直接补充到南桥的维修上，一个是因为换桥走特别不方便，人们轻易不会换桥走。犹豫了一会，我最后还是选了第二个，其它选项都不是很相关。
V6到一个地方上班，必须经过两个侨中的一个。其中一个要返修，政府决定停止收费。但为了保证总的费用不变，要增加另外一个桥的TOLL。政府知道更多的人要使用后面的桥，问什么可以使政府的计划成功。选大家都不会改变使用的TOLL,否则会很麻烦
V7南北两个桥，南桥在修理，所以政府决定不收过路费，而为了避免overall revenue的损失，在北桥提高收费标准by 20cent。问评价政府能否达到目的的条件吧。 我选的是那些原来过北桥的人不会因为提高收费就不走了。
V8从一个地方到另一个地方只能通过N桥或者S桥，N桥最近要重修，因此收费站不能再使用，为了避免总收入降低，就让S桥收费站涨价，加强为何该措施能成功，选了人们如果在桥之间转换会导致非常大的不便。

-- by 会员 soda小怡 (2010/7/29 23:12:43)

V4的题比较全

V4一个地方有两个桥貌似叫north-bridge and south-bridge. 北桥要大修，同时不收过桥费了（toll这个词）；另一方面政府不想因为这个不收费了，降低总体收入，因此南桥的toll要涨价

但是我看到的题，还加了一个条件，说是现在走南桥的人比较很多。问的是加强
我选的是 人们不会变桥走 V7的答案