课时练(二) 阅读理解提速练(练速度)
(限时：35分钟)
Ⅰ.阅读理解
A
(2016·石家庄高三质检一) Common Sense Media is a non-profit group in the United States that studies children's use of media and technology. The group has done a survey asking teachers about the effects of their students' use of entertainment media.
Entertainment media was defined as the TV shows, music, video games that students use for fun. Many teachers said they believe media use has hurt academic performance, which in some cases is already not very strong. Vicky Rideout wrote the report for Common Sense Media. “We have merely four in ten students feel poor at reading, at oral communication and more than that thing the students wrongly fear report writing. So we need to make sure that everything kids are doing is helping to accelerate progress and not preventing it.”
The survey involved 685 teachers around the country. 71% of the teachers said they believe entertainment media has reduced students' ability to pay attention in class. And almost 60% said it has hurt their writing skills. Many teachers thought it has negatively affected students' ideas about boys and girls' relationship. Many also thought it encourages aggression and anti-social behavior. Teachers who describe themselves as uncomfortable with new technologies were more likely than other teachers to see destructive effects of media use on social development.
But not all effects of media use were seen as bad. Almost two thirds of teachers said it also helps the students' ability to find information quickly and efficiently. And one third said using entertainment media has helped their students to multitask (同时执行多项任务) effectively. Only 25% said it just has hurt them. Teachers who consider themselves as techsavvy (科技通) were more likely than others to see an advantage to students' creativity from the use of entertainment media. Vicky Rideout said teachers accept that the way students spend their time and how they like to learn has changed.
语篇解读：本文是一篇议论文。美国的Common Sense Media通过询问老师来调查学生在使用娱乐传媒方面的影响，老师们对娱乐传媒的作用褒贬不一。
1．Vicky Rideout holds the view that entertainment media ________. A．declines students' grades badly
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B．influences students' performance C．accelerates learning progress D．makes all students poor at writing
解析：选B 细节理解题。根据第二段中Vicky Rideout所说的话可知，她认为娱乐传媒影响了学生的在校表现，故B项正确。
2．Teachers who describe themselves as technology knowers were more likely than others to ________.
A．see negative effects of media use B．make students aggressive C．teach students the use of media D．see the benefit of media use
解析：选D 细节理解题。根据最后一段的倒数第二句话可知，这些老师看到的是娱乐传媒的使用给学生带来的好处，故D项正确。
3．It can be inferred from the passage that entertainment media ________. A．only affects students negatively B．may be beneficial to parents C．is a double-edged sword D．will guide public opinions
解析：选C 推理判断题。文章第二、三段讲述娱乐传媒给学生造成的不利影响，最后一段谈到了娱乐传媒的益处，可见娱乐传媒是把双刃剑，故C项正确。
B
(2016·甘肃省高三第一次诊断)Even if trees cannot walk, they are still on the move.
In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests stop and the treeless tundra(冻原) starts has been shifting northward. Trees growing along the tree line must protect themselves from the cold wind. To do this,_plants tend to grow horizontal (水平的) branches low to the ground. The energy it takes for trees to grow this way means they don't have enough energy to make seeds.
But as Earth's climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. And with all that leftover energy, these trees have started producing more seeds. This happens especially in places where white spruce (白云杉) grows.
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White spruce, which is a North American tree, is quite able to produce a lot of seeds, which can move long distances in the wind. When wind-blown seeds end up on the tundra beyond the tree line, they eventually can sprout(发芽) new trees. This explains how a forest can move. Of course, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.
New trees will provide shelters for some snow. Keeping the sun's rays from making the white surface disappear. Instead, the trees absorb the sun's heat. This warms the surrounding air. The extra warmth encourages even more trees to produce seeds. That further boosts a forest's ability to expand. In addition, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the soil below, which encourages trees to grow. The recent rise of temperatures has helped more trees grow past the tree line. People worry about impacts on the animals that depend on frozen conditions for food and shelter.
语篇解读：本文是一篇科研报告。主要研究了气温升高对北极圈植物的影响。 4．What is the main cause of the trees in the Arctic moving northward? A．The shrinking of northern tundra. B．The rising temperature. C．The fierce and cold wind.
D．The abundant resources in the north.
解析：选B 细节理解题。根据第二段的第二句“Across the Arctic, temperatures ...”以及本段的整体内容可知，不断上升的气温是北极圈树木北移的主要原因，即B项正确。
5．What does the underlined word “this” in Paragraph 2 mean? A．To produce more seeds. B．To move northward.
C．To respond to the climate change. D．To protect themselves from the cold wind.
解析：选D 代词指代题。根据画线词前的“Trees growing along the tree line ... cold wind.”可知，画线词this 指代的是本句中的“protect themselves from the cold wind”，故D项正确。
6．What can be inferred from the last paragraph?
A．New trees can trap the snow, which may make the soil colder. B．The trapped snow prevents new trees from producing more seeds. C．New trees can make the surrounding air warmer.
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