单选题
If the Dakota Access Pipeline (输油管) is completed, it will carry nearly half a million barrels of oil across four states every day. Energy Transfer Partners (ETP), a Texas-based company behind the $3.8 billion project, hopes to finish construction in 20i6. But the Standing Rock Sioux, an American Indian tribe (部落), is determined to stop the 1,172-mile pipeline from being built. （76）
Both sides show no signs of backing down.
The Dakota Access Pipeline was announced in 2014. A section of it will run near the Standing Rock Sioux reservation. A reservation is an area of land set aside for American Indians. The tribe says the construction threatens to destroy historical areas and ancient burial sites. They also say the pipeline could pollute their main water source, the Missouri River. In April, the standing Rock Sioux began a protest against the project. They camped at the construction site. Since then, thousands of people, including people from other American Indian tribes, have traveled to the site to join the protest.
ETP says that the pipeline will have built-in safety measures to protect against oil leaks. Workers will also monitor it remotely, and will be able to close valves (阀) within three minutes if leaks are detected.
American Indians have been staging a nonviolent protest for months. The protest took a turn last week when police were called to keep the peace between protesters and armed security guards hired by the company.
（77）
Twenty-eight people have been arrested since then and charged with interfering with the pipeline construction.
单选题
Which of the following is the main idea of the passage?
【答案解析】[解析] 根据第一段第二句“Energy Transfer Partners (ETP), a Texas-based company behind the $3.8 billion project, hopes to finish construction in 2016. ”可知，ETP公司希望在2016年完成输油管道建设。故选A。
单选题
Why do American Indians protest against the construction of this pipeline?
【正确答案】
B
【答案解析】[解析] 根据第二段第五句“They also say the pipeline could pollute their main water source, the Missouri River. ”可知，立岩苏族人认为管道可能会污染他们的主要水源——密苏里河。故选B。
单选题
According to the passage, the workers can ______ in case of pipeline leaks.
【正确答案】
D
【答案解析】[解析] 根据第三段第二句“Workers will also monitor it remotely, and will be able to close valves within three minutes if leaks are detected. ”可知，工人们可以进行远程监控，如果发现管道泄漏，他们能在3分钟内关上阀门。故选D。
单选题
According to the passage, which of the following statements is NOT TRUE?
【正确答案】
C
【答案解析】[解析] 根据第一段第一句“...carry nearly half a million barrels of oil across four states every day. ”可知，A项正确；根据第一段第三句“...is determined to stop the 1,172-mile pipeline from being built. ”可知，B项正确；根据第二段最后一句“...including people from other American Indian tribes, have traveled to the site to join the protest. ”可知，参与抗议活动的不只是立岩苏族，还包括美国其他印第安部族的人，故C项错误；根据第一段最后一句“Both sides show no signs of backing down. ”可知，D项正确。故选C。