2023年12月大学英语四级听力试题练习

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　　在现实的学习、工作中，我们会经常接触并使用练习题，只有多做题，学习成绩才能提上来。学习就是一个反复反复再反复的过程，多做题。那么一般好的习题都具备什么特点呢？以下是小编为大家收集的2023年12月大学英语四级听力试题练习，仅供参考，欢迎大家阅读。

2023年12月大学英语四级听力试题练习

　　12月大学英语四级听力试题练习 1

　　The suicide attack in Istanbul that killed at least 41 people is the latest in a series of deadly terrorism strikes to hit Turkey.

　　Tuesday’s attack at Ataturk International Airport also wounded more than 200 people. Istanbul’s governor said at least 10 of those killed were foreigners.

　　Three suicide bombers entered the airport’s international arrival area and began shooting people before setting off explosives.

　　Officials announced Wednesday that the airport had fully reopened. Turkish Airlines said it restarted all operations and flights resumed between the United States and Istanbul.

　　No group has claimed responsibility for the attack. But, Turkish Prime Minister Binali Yildirim said early evidence suggested that it was the Islamic State group.

　　He called the attack “cowardly” and promised to keep up Turkey’s fight against extremism. “Unity will be the best answer to terrorists,” he said.

　　The Islamic State group was blamed for two suicide bombings in Istanbul earlier this year that targeted foreign tourists. Many people have been killed in Ankara and Istanbul in bombings carried out by both Islamic State and Kurdish rebels.

　　The Kurdish rebel group PKK has been known to carry out suicide bombings. However, it usually targets government security forces. This month the group attacked a police bus, killing 11 people.

　　The recent attacks underscore the sharp increase in recent terrorist bombings in Turkey that have killed hundreds. Some of the attacks have been blamed on the PKK, while others have been attributed to Islamic State.

　　Terrorism experts say Islamic State is believed to have many fighters who are Turkish nationals. They also suggested that recent Islamic State defeats in Iraq may have led to Tuesday’s airport attack.

　　The Institute for the Study of War predicted an increase in Islamic State attacks in Turkey during the Islamic holy month of Ramadan, which ends July 5. The institute said Islamic State appears to be using Turkey to help develop a larger plan in the area.

　　“ISIS will likely select targets in neighboring states that relieve pressure from the group in Syria while setting conditions for future expansion in those states,” the organization wrote. “Targets that serve this dual purpose include foreign tourists, state security forces, and U.S. military elements in Turkey and Jordan.”

　　Syria conflict

　　Another regional issue affecting terrorism in Turkey is Syria’s civil war. Armed groups roam along both sides of the 804-kilometer Turkey-Syria border. Turkey has been accused of permitting foreign fighters to cross the border to join groups like the Islamic State.

　　The civil war has also led to an estimated 2.5 million Syrians now living in Turkey. This has strained government resources and caused anger among the Turkish population.

　　Turkey was once seen as a bastion of stability in the area, with a strong economy and tourist industry. But last year, tourist arrivals fell by one-third.

　　The increase in terror has led to increasing uncertainty about Turkey’s economic future and its national security.

　　I’m Jonathan Evans.________________________________________________________________

　　Words in This Story

　　cowardly – adj. afraid in a way that makes you unable to do what is right or expected; lacking courage

　　underscore – v. to emphasize or show the importance of

　　attribute – v. considered to be caused by something

　　roam – v. move about or travel over a wide area

　　bastion – n. a place or system in which something continues to survive

　　stability – n. the quality or state of something that is not easily changed or likely to change

　　12月大学英语四级听力试题练习 2

　　The United States government is increasingly using social media to investigate people who may represent a security threat to the country.

　　The latest example comes from the Department of Homeland Security’s Customs and Border Protection office. It wants to ask foreign visitors to provide information about their accounts on social media sites like Facebook and Twitter.

　　An optional – or non-required – question would be added to the form that people must complete before entering the United States.

　　The form asks information like the person’s name, phone number, and countries they have visited since 2011.

　　The proposed social media question would only concern travelers who do not need a visa to enter the United States. Travelers from 38 countries are permitted to enter the U.S. without a visa.

　　The Customs and Border Protection office said in its proposal that adding the question would affect about 24 million people.

　　There is a 60-day comment period for the public to share their opinion about the proposal.

　　Congress Also Proposing Social Media Bills

　　U.S. lawmakers have also proposed bills concerning the use of social media for researching possible terrorism links.

　　Senator John McCain sponsored a bill that would require the Department of Homeland Security to look at internet activity and social media profiles of anyone seeking entry to the United States.

　　Senators Martin Heinrich and Jeff Flake sponsored a bill that would permit the Department of Homeland Security to “search open source information, including internet and social media postings” of people applying for a visa to enter the U.S.

　　Senator Chuck Schumer has proposed a different plan to help officials search for possible terror links. He wants to reward people who send officials terrorism-related information from social media posts. Anyone whose information leads to the arrest of someone planning an attack in the U.S. would be paid money.

　　Schumer’s proposal would make use of the Justice Department’s Rewards for Justice program.

　　Schumer said that investigators need the public’s help. Schumer said he wants to award people who come forward with information anywhere from $25,000 to $25 million.

　　In the House of Representatives, Congressman Stephen Fincher proposed a bill that centered on stopping prisoners from becoming radicalized.

　　His bill would require volunteers in federal prisons to provide their social media accounts during their background investigations. Fincher called U.S. prisons a “breeding ground” for Islamic radicalization.

　　Chris Hannas reported this story for VOANews.com. Mehrnoush Karimian-Ainsworth adapted the report for Learning English. Ashley Thompson was the editor.

　　________________________________________________________________

　　Words in This Story

　　optional – adj. available as a choice but not required

　　sponsored – v. to introduce and support (a proposal) in a legislative assembly

　　breeding ground – expression. a situation or place in which bad things can easily begin to develop

　　12月大学英语四级听力试题练习 3

　　If the salinity(含盐量) of ocean waters is analyzed, it is found to vary only slightly from place to place.Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the subtraction of water from the ocean by means of evaporation--conversion of liquid water to water vapor. In this manner, the salinity is increased, since the salts staybehind. If this is carried to the extreme, of course, white crystals of salt would be left behind.

　　The opposite of evaporation is precipitation(降水), such as rain, by which water is added to the ocean. Here the ocean is being diluted(稀释) so that the salinity is decreased. This may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean. Thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation or runoff(形成地表水部分的降水).

　　Normally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. Similarly, in coastal regions whererivers dilute the sea, salinity is somewhat lower than in other oceanic areas.

　　A third process by which salinity may be altered is associated with the formation and melting of sea ice. When seawater is frozen, the dissolved materials are left behind. In this manner, seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. Of course, when this ice melts, it will tend to decrease the salinity of the surrounding water.

　　In the Weddell Sea, off Antarctica, the densest water in the oceans is formed as a result of this freezingprocess, which increases the salinity of cold water. This heavy water sinks and is found in the deeper portions of the oceans of the world.

　　练习题：

　　Choose correct answers to the question:

　　1.The best title of the passage can be “______”.

　　A.Typical Oceans and Their Respective Features

　　B.The Causes of the Changes in Salinity of Ocean Water

　　C.Different Oceans Have Different Salinity

　　D.The Precipitation and Evaporation of Oceans

　　2.Which of the following processes will increase salinity of ocean waters?

　　A.Evaporation.

　　B. Precipitation.

　　C. Melting.

　　D. Dilution.