Every spring migrating salmon return to British Columbia’s rivers to spawn. And every spring new reports detail fresh disasters that befall them. This year is no different; The fisheries committee of Canada’s House of Commons and a former chief justice of British Columbia, Bryan Williams, have just. examined separately why 1.3 m sockeye salmon mysteriously "disappeared" from the famed Fraser river fishery in 2004. Their conclusions point to a politically explosive conflict between the survival of salmon and the rights of First Nations, as Canadians call Indians.
In 2004, only about 524, 000 salmon are thought to have returned to the spawning grounds, barely more than a quarter the number who made it four years earlier. High water temperatures may have killed many. The House of Commons also lambasted the federal Department of Fisheries and Oceans (DFO) for poor scientific data, and for failing to enforce catch levels. Four similar reports since 1992 have called for the department’s reform. In vain: its senior officials are "in denial" about its failings, said the committee.
Mr Williams’ report added a more shocking twist. He concluded that illegal fishing on the Fraser river is "rampant and out of control", with "no-go" zones where fisheries officers are’ told not to confront Indian poachers for fear of violence. The judge complained that the DFO withheld a report by one of its investigators which detailed extensive poaching and sale of salmon by members of the Cheam First Nation, some of whom were armed.
Some First Nations claim an unrestricted right to fish and sell their catch. Canada’s constitution acknowledges the aboriginal right to fish for food and for social and ceremonial needs, but not a general commercial right. On the Fraser, however, the DFO has granted Indians a special commercial fishery. To some. Indians, even that is not enough.
Both reports called for more funds for the DFO, to improve data collection and enforcement. They also recommended returning to a single legal regime for commercial fishing applying to all Canadians.
On April 14th, Geoff Regan, the federal fisheries minister, responded to two previous reports from a year ago. One, from a First Nations group, suggested giving natives a rising share of the catch. The other proposed a new quota system for fishing licences, and the conclusion of long-standing talks on treaties, including fishing rights, with First Nations. Mr Regan said his department would spend this year consulting "stakeholders" (natives, commercial and sport fishermen). It will also launch pilot projects aimed at improving conservation, enforcement and First Nations’ access to fisheries.
Which of the following is NOT the reason for the decrease of salmon according to Mr Williams

A:High water temperatures. B:Shocking twist. C:Illegal fishing. D:Officials’ failings.

Text 2
Every spring migrating salmon return to British Columbia’s rivers to spawn. And every spring new reports detail fresh disasters that befall them. This year is no different. The fisheries committee of Canada’s House of Commons and a former chief justice of British Columbia, Bryan Williams, have just examined separately why 1.3 million sockeye salmon mysteriously "disappeared" from the famed Fraser river fishery in 2004.Their conclusions point to a politically explosive conflict between the survival of salmon and the rights of First Nations, as Canadians call Indians.
In 2004, only about 524, 000 salmon are thought to have returned to the spawning grounds, barely more than a quarter the number who made it four years earlier. High water temperatures may have killed many. The House of Commons also lambasted the federal Department of Fisheries and Oceans (DFO) for poor scientific data, and for failing to enforce catch levels. Four similar reports since 1992 have called for the department’s reform. In vain: its senior officials are "in denial" about its ’failings, said the committee.
Mr. Williams’ report added a more shocking twist. He concluded that illegal fishing on the Fraser river is "rampant and out of control", with "no go" zones where fisheries officers are told not to confront Indian poachers for fear of violence. The judge complained that the DFO withheld a report by one of its investigators which detailed extensive poaching and sale of salmon by members of the Cheam First Nation, some of whom were armed.
Some First Nations claim an unrestricted right to fish and sell their catch. Canada’s constitution acknowledges the aboriginal right to fish for food and for social and ceremonial needs, but not a general commercial right. On the Fraser, however, the DFO has granted Indians a special commercial fishery. To some Indians, even that is not enough.
Both reports called for more funds for the DFO, to improve data collection and enforcement. They also recommended returning to a single legal regime for commercial fishing applying to all Canadians.
On April 14th, Geoff Regan, the federal fisheries minister, responded to two previous reports from a year ago. One, from a First Nations group, suggested giving natives a rising share of the catch. The other proposed a new quota system for fishing licences, and the conclusion of long-standing talks on treaties, including fishing rights, with First Nations. Mr. Regan said his department would spend this year consulting "stakeholders" (natives, commercial and sport fishermen). It will also launch pilot projects aimed at improving conservation, enforcement and First Nations’ access to fisheries.

Which of the following is NOT the reason for the decrease of salmon according to Mr. Williams（）

A:High water temperatures. B:Shocking twist. C:Illegal fishing. D:Officials' failings.

Text 2

Which of the following is NOT the reason for the decrease of salmon according to Mr Williams

A:High water temperatures. B:Shocking twist. C:Illegal fishing. D:Officials’ failings.

Passage One What do you use to ge around town A car A bike Your feet Perhaps you should try a Seaway! The Seaway is perfect for short journey. It’s an electric vehicle that consists of a platform between two wheels, with a pole that connects the platform to the handlebars. To ride it ,you step up onto the platform, and control the Seaway by moving your body. Lean forwards to go faster, and backwards to slow down. On older models, direction is controlled by a twist grip (扭转把手）on the left handlebar. This varies the speeds between the two motors, a decrease in the speed of the left wheel would turn the Seaway to the left .With newer models you simply lean to the left or right. Meanwhile, a gyroscope (陀螺仪）detects your movements and prevents the machine from falling over. The Seaway has a maximum speed of 19 km per hour and a range of about 38 km. After that, you need to plug it in and recharge the battery. Segways are used for a variety of purposes. People with mobility problems can now enjoy walks in the country with their friends and family. Some golfers us them as an alternative to the golf cart. And dog owners now have an easier way to take the dog to the park. A few police forces use Segways, too. They allow officers to move quickly whilst maintaining contact with the public. They’re also becoming a common sight on airport. However, the most popular use is in tourism, particularly for city tours. Visit any major tourist city in summer, sit outside a cafe for a while and there’s a good change you’ll see a group of tourists passing on Segways. How do you turn to the left on Segways of newer models

A:Lean to the left. B:Adjust the twist grip. C:Press the left bar. D:Control gyroscope

一般来说，癌细胞进行转移会分为几个阶段：一是侵犯，此时癌上皮细胞会松开癌细胞之间的连接，使之“重获自由”而能移动到其他地方；二是“内渗”，此时癌细胞穿过血管或淋巴管的内皮进入循环系统；三是“外渗”，此时经过循环系统之旅洗礼的幸存者会穿过微血管的内皮细胞到达其他组织；最后就是这些癌细胞的新大陆移民，在其他组织当中繁衍形成转移的恶性肿瘤。
此前这方面的研究都是将癌细胞注射入循环系统中，如此便缺少了与侵犯和内渗作用相关的基因研究。最近，美国一家研究所发表了与癌症转移早期相关的研究结果。
首先他们使用目前技术领先的微阵列技术对会转移的老鼠乳癌细胞的基因表现进行分析，从中找到了一个重要的转录因子Twist。这个转录因子在胚胎发育的某些过程中，肩负着引发细胞移动以及组织重组的任务，而类似的细胞移动以及组织重塑情形在肿瘤转移的时候也会发生。
他们发现Twist会使由钙黏附素E所调控的细胞黏附作用失效，产生上皮细胞的上皮一间质转化；且被阻断了Twist表现的癌细胞的转移程度会降低，在循环系统中的癌细胞数目也有减少的现象。另外，人类乳癌之一的侵犯性小叶癌当中也观察到Twist抑制了钙黏附素E的表现。
研究人员推测，癌细胞之所以能进行转移，可能是由于唤醒身体中沉睡已久的、负责胚胎早期型态发育的基因，导致相关程序的启动，从而获得可怕的转移能力。
未来在临床上也许能开发药物以抑制Twist这类基因的表现，避免肿瘤转移；或者可以藉由筛检这些基因，及早发现肿瘤未来的走向，并给予适当的治疗。
下列说法符合文意的是( )。

A:与胚胎发育相关的转录因子引起癌转移 B:科研人员找到了可以阻止癌症转移的基因 C:Twist在胚胎发育和癌细胞转移中表现相似 D:筛检人体基因可以及早发现癌症

一般来说，癌细胞进行转移会分为几个阶段：一是侵犯，此时癌上皮细胞会松开癌细胞之间的连接，使之“重获自由”而能移动到其他地方；二是“内渗”，此时癌细胞穿过血管或淋巴管的内皮进入循环系统；三是“外渗”，此时经过循环系统之旅洗礼的幸存者会穿过微血管的内皮细胞到达其他组织；最后就是这些癌细胞的新大陆移民，在其他组织当中繁衍形成转移的恶性肿瘤。
此前这方面的研究都是将癌细胞注射入循环系统中，如此便缺少了与侵犯和内渗作用相关的基因研究。最近，美国一家研究所发表了与癌症转移早期相关的研究结果。
首先他们使用目前技术领先的微阵列技术对会转移的老鼠乳癌细胞的基因表现进行分析，从中找到了一个重要的转录因子Twist。这个转录因子在胚胎发育的某些过程中，肩负着引发细胞移动以及组织重组的任务，而类似的细胞移动以及组织重塑情形在肿瘤转移的时候也会发生。
他们发现Twist会使由钙黏附素E所调控的细胞黏附作用失效，产生上皮细胞的上皮一间质转化；且被阻断了Twist表现的癌细胞的转移程度会降低，在循环系统中的癌细胞数目也有减少的现象。另外，人类乳癌之一的侵犯性小叶癌当中也观察到Twist抑制了钙黏附素E的表现。
研究人员推测，癌细胞之所以能进行转移，可能是由于唤醒身体中沉睡已久的、负责胚胎早期型态发育的基因，导致相关程序的启动，从而获得可怕的转移能力。
未来在临床上也许能开发药物以抑制Twist这类基因的表现，避免肿瘤转移；或者可以藉由筛检这些基因，及早发现肿瘤未来的走向，并给予适当的治疗。

下列说法符合文意的是（）。

A:与胚胎发育相关的转录因子引起癌转移 B:科研人员找到了可以阻止癌症转移的基因 C:Twist在胚胎发育和癌细胞转移中表现相似 D:筛检人体基因可以及早发现癌症

一般来说，癌细胞进行转移会分为几个阶段：一是“侵犯”，此时癌上皮细胞会松开癌细胞之间的连接，使之“重获自由”而能移动到其他地方；二是“内渗”，此时癌细胞穿过血管或淋巴管的内皮进入循环系统；三是“外渗”，此时经过循环系统之旅洗礼的幸存者会穿过微血管的内皮细胞到达其他组织；最后就是这些癌细胞的新大陆移民，在其他组织当中繁衍形成转移的恶性肿瘤。 此前这方面的研究都是将癌细胞注射入循环系统中，如此便缺少了与侵犯和内渗作用相关的基因研究。最近，美国一家研究所发表了与癌症转移早期相关的研究结果。 首先他们使用目前技术领先的微阵列技术对会转移的老鼠乳癌细胞的基因表现进行分析，从中找到了一个重要的转录因子Twist。这个转录因子在胚胎发育的某些过程中，肩负着引发细胞移动以及组织重组的任务，而类似的细胞移动以及组织重塑情形在肿瘤转移的时候也会发生。 他们发现Twist会使由钙黏附素E所调控的细胞黏附作用失效，产生上皮细胞的上皮—间质转化；且被阻断了Twist表现的癌细胞的转移程度会降低，在循环系统中的癌细胞数目也有减少的现象。另外，在人类乳癌之一的侵犯性小叶癌当中也观察到Twist抑制了钙黏附素E的表现。 研究人员推测，癌细胞之所以能进行转移，可能是由于唤醒身体中沉睡已久的、负责胚胎早期形态发育的基因，导致相关程序的启动，从而获得可怕的转移能力。 未来在临床上也许能开发药物以抑制Twist这类基因的表现，避免肿瘤转移；或者可以藉由筛检这些基因，及早期发现肿瘤未来的走向，并给予适当的治疗。下列说法符合文意的是（ ）。

A:与胚胎发育相关的转录因子引起癌转移 B:科研人员找到了可以阻止癌症转移的基因 C:Twist在胚胎发育和癌细胞转移中表现相似 D:筛检人体基因可以及早发现癌症

一般来说，癌细胞进行转移会分为几个阶段：一是侵犯，此时癌上皮细胞会松开癌细胞之间的连接，使之“重获自由”而能移动到其他地方；二是“内渗”，此时癌细胞穿过血管或淋巴管的内皮进入循环系统；三是“外渗”，此时经过循环系统之旅洗礼的幸存者会穿过微血管的内皮细胞到达其他组织；最后就是这些癌细胞的新大陆移民，在其他组织当中繁衍形成转移的恶性肿瘤。 
此前这方面的研究都是将癌细胞注射入循环系统中，如此便缺少了与侵犯和内渗作用相关的基因研究。最近，美国一家研究所发表了与癌症转移早期相关的研究结果。 
首先他们使用目前技术领先的徽阵列技术对会转移的老鼠乳癌细胞的基因表现进行分析，从中找到了一个重要的转录因子Twist。这个转录因子在胚胎发育的某些过程中，肩负若引发细胞移动以及组织重组的任务，而类似的细胞移动以及组织重塑情形在肿瘤转移的时候也会发生。 
他们发现，Twist会使由钙黏附素E所调控的细胞黏附作用失效，产生上皮细胞的上皮—间质转化；被阻断了Twist表现的癌细胞的转移程度会降低，在循环系统中的癌细胞数目也有减少的现象。另外，人类乳癌之一的侵犯性小叶癌当中也观察到Twist抑制了钙黏附素E的表现。 
研究人员推测，癌细胞之所以能够进行转移，可能是由于唤醒了身体中沉睡已久的、负责胚胎早期型态发育的基因，导致相关程序的启动，从而获得可怕的转移能力。 
未来在临床上也许能开发药物以抑制Twist这类基因的表现，避免肿瘤转移；或者可以藉由筛检这些基因，及早发现肿瘤的未来走向，并给予适当的话疗。

下列说法符合文意的是（）

A:与胚胎发育相关的转录因子引起癌转移 B:科研人员找到了可以阻止癌症转移的基因 C:Twist在胚胎发育和癌细胞转移中表现相似 D:筛检人体基因可及早发现癌症