专业英语四级（听力）模拟试卷631
听写
1. Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be done at normal speed, listen and try to understand the meaning. For the second and third readings, the passage, except the first sentence, will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be done at normal speed again and during this time you should check your work. You will then be given ONE minute to check through your work once more.
Write on ANSWER SHEET ONE. The first sentence of the passage is already provided.
The Media in the U.S.
The media plays a vital role as a guardian of U.S. democracy.
The Media in the U.S.
The media plays a vital role as a guardian of U.S. democracy. / U.S. media have traveled a long road since the first newspaper was published in 1690. / Within 50 years, magazines also began appearing in several major American cities. / The advent of commercial radio at the beginning of the 20th century / ended print’s monopoly of the media in America. / Television, an even more powerful medium, / entered the scene shortly after World War II. / Interactive media, fueled by the advance of digital technology / and the growing convergence of the computer, telephone and cable television, / represent the principal trend of the 21st century. /
解析：
讲座
Global Warming
1. Global warming
. A mix of 【T1】________ and irregular climate change 【T1】________
2. Causes of global warming
. 【T2】________: carbon dioxide, water vapor, and methane 【T2】________
.【T3】________: using forests as fuel, for building, furniture, etc. 【T3】________
. The use of【T4】________on crops 【T4】________
. 【T5】________ 【T5】________
3. Effects of global warming
. Destruction of important【T6】________ systems 【T6】________
. Loss and endangerment of many【T7】________ 【T7】________
. 【T8】________ 【T8】________
4. Solutions to global warming
. To reduce gases put into atmosphere
—Be more【T9】________, use wind and solar power, etc.【T9】________
. To increase greenhouse gases taken out of the atmosphere —Planting trees
—Making changes to the【T10】________ 【T10】________
2.【T1】
rising temperatures
解析：本题考查考生对细节的把握，要求补全对global warming（全球变暖）定义的解释。根据录音，全球变暖是指温度不断上升（rising temperatures）和不寻常的气候变化（irregular climate change）。故本题填入rising temperatures。
3.【T2】
greenhouse gases
解析：本题考查考生对分述点的把握，要求填入全球变暖的第一个原因。录音提到，全球变暖的第一个原因是温室气体（greenhouse gases），如二氧化碳（carbon dioxide），水蒸气（water vapor）和甲烷（methane）。故本题填入greenhouse gases。
4.【T3】
deforestation
解析：本题考查考生对分述点的把握，要求填入全球变暖的第二个原因。录音提到，全球变暖的第二个重要原因是森林砍伐（deforestation）。人类使用林木作为燃料，用于建筑，家具和其他用途，如纸张等。故本题填入deforestation。
5.【T4】
chemical fertilizers
解析：本题考查考生对分述点的把握，要求补充全球变暖第三个原因。根据题干内容，此原因与农作物（crops）相关。录音提到，导致全球变暖的另一个重要但有时被忽视的原因，是对农作物使用化肥（chemical fertilizers）。故本题填入chemical fertilizers。
6.【T5】
solar radiation
解析：本题考查考生对分述点的把握，要求填入全球变暖的最后一个原因。根据录音，全球变暖由以光波形式穿过地球大气层的太阳辐射（solar radiation）引起的。故本题填入solar radiation。
7.【T6】
physical and biological
解析：本题考查考生对分述点的把握，要求填入
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