With the explosion of digital media in recent year...
With the explosion of digital media in recent years, a growing number of students are spending their time in front of the small screen---whether it’s a Smartphone or tablet. In just two years, the number of US children using digital media has doubled to 72 percent, according to a survey by Common Sense Media.
On average, students spend about two hours a day in front of the screen. Watching TV makes up half of this time. But gradually, the time children spend watching TV is decreasing, with more and more time being given to digital media. Some of the common things kids do with digital media are playing games, watching videos and sending messages to friends.
The digital world can be used very effectively. In the survey, 74 percent of teachers said that digital media would improve students’ learning. As students can quickly get hold of information they need.
However, without guidance from teachers or parents, digital media may have bad influence on students’ attention span and communication skills. So it’s always best to use your smartphone and tablet carefully.
When using digital media, you need to find a balance. Just like study, too much can lead to information overload, and give you a headache. Also, make sure your smartphone or tablet doesn’t take priority over more important tasks. Give your eyes a rest, and remember: offline is just as fun as online.
1. Two years ago, the number of US children who use digital media made up _____.{A; B; C}
A. 72%
B. 36%
C. 74%
2. Which is not TRUE according to the passage？{A; B; C}
A. Using digital media is good for students’ learning.
B. Using digital media can improve students’ communication skills.
C. Students should use their digital media under adults’ guidance.
3. The underlined word “overload” in the last paragraph means _____ in Chinese.{A; B; C}
A. 重叠
B. 夸大
C. 超负荷
4. The article mentions that kids usually use digital media to _____.{A; B; C}
①play games
②send message to friends
③watch videos
④shop online
A. ①②③
B. ①②③④
C. ①③④
5. Why is the time children spend watching TV decreasing？{A; B; C}
A. Because they need a balance of study and entertainment.
B. Because the TV shows aren’t interesting at all.
C. Because they turn to spend more time on digital media.
时间：2023-03-09 17:41:07
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An inert gas system is designed to reduce the possibility of tank explosions by（）.
A . eliminating sparks and fire in the vicinity of cargo tanks
B . removing all hydrocarbon gases from the cargo tanks
C . blanketing cargo tanks with inert foam
D . reducing the oxygen concentration below levels necessary for combustio
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With regards to a diesel engine crankcase explosion, the most violent is the（） (1) primary explosion (2) secondary explosion
A . (1) only
B . (2) only
C . both (1) and (2)
D . neither (1) or (2)
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A high temperature alarm or （） which will melt is used to guard against the explosion of compressor air pipelines.
A . a flame trap
B . a relief valve
C . a fusible plug
D . a bursting ca
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The rate of expansion of heated fuel oil varies with the （）.
A . conductivity
B . viscosity
C . volume
D . specific gravity
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Explosions do occur （） caused by the ignition of oil or vapour gaining access from compressors or defective engine starting valves.
A . in boiler drums
B . in refrigerating plants
C . in starting air pipes
D . in air cooler
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Which of the following will be desirable properties of refrigerant?（） (1) non-explosive (2) non-corrosive (3) that it doesn’t react with lubricants
A . (1), (2) and (3)
B . (1) and (2)
C . (1) and (3)
D . (2) and (3)
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A firebox explosion in an automatically fired auxiliary boiler may be the result of （）
A . excessive purging before lighting off
B . insufficient trail for ignition period
C . a faulty transformer in the ignition circuit
D . insufficient purging before lighting off
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The explosive range of a mixture of flammable vapors is specified as a percentage of （）.
A . flammable vapor by volume in air
B . oxygen present to support combustion
C . the temperature of the flash point
D . the lower limit of explosibility of the mixture
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The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.
A . auto-ignition point
B . flash point
C . lower explosive limit (LEL)
D . threshold limit value (TLV)
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When a vessel signals her distress by means of a gun or other explosive signal，the firing should be at intervals of approximately（）.
A . 10 minutes
B . 1 minute
C . 1 hour
D . 3 minute
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The loss of （） from an air compressor could lead to an overheated air discharge and possibly an explosion in the pipelines leading to the air reservoir.
A、lubricating oil
B、compressed air
C、cooling water
D、sealing ring
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Which of the following reveal the orientation of harmony with nature?
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With the establishment of the bourgeois dictatorship, Charles II became the Protector of the English Commonwealth.
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According to the article, the population explosion of elk and deer was caused also by ______.
A．the adoption of a policy of aggressive predator elimination.
B．the increased number of National Parks.
C．the deceasing number of visitors to National Parks.
D．the heavy exploitation of endangered animals in the 20 century.
此题为多项选择题。
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The consolidation of the crumbling walls and towers has been carried out in ______ with a program agreed with by the Department of the Environment.
A．case
B．accordance
C．place
D．charge
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◑The attack of the World Trade Center will leave a ______ impression on those who have witnessed the explosion.◑long◑forever◑lasting◑lively
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The environment was destroyed as a result of population explosion with the advancing of industrialization.
A．Y
B．N
C．NG
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“Badly frightened by the explosion, the boy rushed out of the laboratory.” is a loose sentence.
A:正确;
B:错误
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听力原文： Palestinian police have arrested six members of the militant Islamic Resistance Movement (Hamas) in connection with a bomb explosion earlier this week at a controversial Jewish housing project, security sources said yesterday. The security sources gave few details on the arrests, saying they started on Tuesday in the villages of Beit Sahour and Taamara near Bethlehem in the southern part of the West Bank. The small bomb exploded on Monday night near the site of the controversial Jewish housing project of Hat Homa in the East Jerusalem district of Jebel Abu Ghneim, but no one was in the area at the time.
What caused some Hamas members to be arrested？
A．A bomb explosion at a military site.
B．An explosion at a Jewish housing project.
C．An attack against Palestinian residents.
D．A boarder dispute with Jewish residents.
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passage four：questions 26～30 are based on the following passage. It came as something of a surprise when Diana, Princess of Wales, made a trip to Angola in 1997, to support the Red Cross’s campaign for a total ban on all anti-personnel landmines. Within hours of arriving in Angola, television screens around the World were filled with images of her comforting victims injured in explosions caused by landmines. “I knew the statistics,” she said. “But putting a face to those figures brought the reality home to me; like When I met Sandra, a 13-year-old girl who had lost her leg, and people like her.”
The Princess concluded, with a simple message: “We must stop landmines”. And she used every opportunity during her visit to repeat this message.
But, back in London, her views were not shared by some members of the British government, which refused to support a ban on these weapons. Angry politicians launched an, attack on the Princess in the press. They described her as “very ill-informed” and a “loose cannon （乱放炮的人）.”
The Princess responded by brushing aside the criticisms: “This is a distraction （干扰） we do not need. All I’m trying to do is help.”
Opposition parties, the media and the Public immediately voiced their support for the Princess. To make matters worse for the government, it soon emerged that the Princess’s trip had been approved by the Foreign Office, and that she was in fact very well-informed about both the situation in Angola and the British government’s policy regarding landmines. The result was a severe embarrassment for the government.
To try and limit the damage, the Foreign Secretary, Malcolm Rifkind, claimed that the Princess’s views on landmines were not very different from government policy, and that it was “working towards” a worldwide ban. The Defense Secretary, Michael Portillo, claimed the matter was “a misinterpretation or misunderstanding.”
For the Princess, the trip to this war-torn country was an excellent opportunity to use her popularity to show the world how much destruction and suffering landmines can cause. She said that the experience had also given her the Chance to get closer to people and their problems.
第26题：Princess Diana paid a visit to Angola in 1997 ________.
A．to voice her support for a total ban of landmines
B．to clarify the British government’s stand on landmines
C．to investigate the sufferings of landmine victims there
D．to establish her image as a friend of landmine victims
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What is NOT the cause of the recent explosion in academic movement？
A．Many scholars like to find an isolated place in a remote area so that they can concentrate on their researches.
B．Planes can take scholars here and there.
C．There are more people working in similar fields than before.
D．There are more learning centres than before.
此题为多项选择题。
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By saying that the "blast wave" from the explosion acts like "an invisible wall of energy", the author intends to say that ______.
A．blast can cause shrapnel or other bits of metal to slice through flesh like a knife
B．its energy can cause a swath of disfiguring burns
C．this energy wall can prevent victims from physical injury and obvious bleeding
D．its tremendous energy can inflict massive internal injuries
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Describe the rises associated with each of the types of workforce diversity.
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We feel so time-pressed partly because of the information explosion.（）
是
否
