英语四级听力部分算是同学们考试时的难点，听力不能急于求成，需要耐心练习。但是距离12月四六级考试的时间越来越近了，听力也需要在短期内得到迅速提升，因此小编整理了英语四级听力冲刺模拟练习题，希望大家可以把握好最后这段时间，在练习中掌握技巧。

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听力材料：

　　From VOA Learning English, this is In The News.

　　The United States and Iranian officials meet in Viennafor a final round of talk on Iran's nuclear program.However, a top U.S. official says negotiators may notreach an agreement by the time limit of June 30.

　　U.S. Secretary of State John Kerry and Iranian Foreign Minister Mohammad Javad Zarif areplanning private discussions in the Austrian capital. Others expected to take part in the talksare the "P5 plus one" nations. They are the five permanent members of the United NationsSecurity Council and Germany.

　　The U.S. official said negotiators remain "committed" to the June 30 deadline but talks maycontinue beyond that date. The official added that all parties in the talks want to get a goodagreement. But Obama administration spokesman, Josh Earnest, said there are no immediateplans to extend the deadline beyond Tuesday.

　　"The negotiations continue to be difficult but there continues to be a good faith effort on bothsides to try to complete them in the timetable that we've laid out."

　　Iran reached a framework agreement with the U.S., Russia, China, France, Britain andGermany on April 2. The agreement would permit inspections of nuclear sites and place limitson Iran's ability to enrich uranium, which can be used as fuel for a nuclear weapon. Inexchange, Iran would receive relief from international sanctions. However, negotiators are stillworking on details of the plan.

　　One debated issue in negotiations is when sanctions will be lifted. Iran wants an immediate endto sanctions if an agreement is reached. The restrictions have seriously hurt the county'seconomy. Other countries involved in the negotiations want sanctions to be removed in stepsover time. They also want a process to verify that Iran is observing the agreement.

　　The two sides also disagree over inspections of suspected nuclear centers. Iran's spiritualleader, Ayatollah Ali Khamenei, said Iran will not permit international inspectors to see militarysites, scientists or documents. He spoke Tuesday on state television. He rejected limitations onthe country's nuclear research and development lasting 10 to 12 years. And he demanded thatsanctions be lifted upon signing the deal instead of in stages. In previous statements, thereligious leader had expressed support for the talks.

　　Secretary Kerry answered the comments saying the Iranian leader's comments were not new.He said, "What matters ...is what is agreed upon within the four corners of the document, thatis what is yet to be determined."

　　Mr. Kerry added that if Iran fails to abide by the framework agreement reached in Lausanne,Switzerland, "there will not be an agreement."

　　Former Ambassador James Jeffrey is one of several former officials to sign an open letterexpressing concern the agreement may not be a good one. Five of those officials have served inthe administration of President Obama. Mr. Jeffrey said those who signed the letter areconcerned the administration will offer too many concessions. They urged tough inspections,long-term limits on nuclear research, full information on Iran's past activities and a gradualreduction in sanctions.

　　Negotiation between Iran and the six powers have lasted for two years. There already havebeen two extensions of negotiating deadlines. Mark Fitzpatrick of the International Institute forStrategic Studies said, "The comprehensive deal, if and when it is struck, needs to be clearand detailed as to what is allowed and what's not allowed."

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