《2025年同步练习册分层检测卷高中英语选择性必修第一册外研版》

Ⅳ. 阅读理解
A
Earth Day is April 22. Every year，people around the world observe the day by helping to care for the environment. They carry out all kinds of activities in an effort to better the planet’s health.
One way to support this goal is to grow plants native to your area. This helps wildlife like birds and insects that evolved alongside native plants. For many of these animals，plant pollen（花粉）is their food. Native pollinators often cannot recognise non-native plants as food. This means they do not collect the pollen or spread plants’ seeds. Planting non-native species creates so-called “food deserts” for pollinators including bees，birds，bats，butterflies and more.
Doug Tallamy is a professor of entomology at the University of Delaware. Entomology is the study of insects. He found that non-native plant species can harm the natural food chain，which can lead to a collapse of the environment. “Plant choice matters，” he said. “The plants we choose to landscape our properties should be determined by how much life can live there.”
Humans depend strongly on insects. Without them，we would have no flowering plants，which would harm the food web that supports important animals. Birds，for example，depend on plants for food and spread their seeds while keeping the populations of harmful insects down.
Insects support plants that provide oxygen，clean our water，capture carbon and add nutrients to the soil. That builds topsoil and prevents flooding. Without insects，the biosphere—the living parts of the Earth—would rot because of the loss of insect decomposers. Humans simply could not survive that，Tallamy said.
In addition to providing food and habitat for insects and other wildlife，native plants are able to grow easily and do not require much care. That means less watering and less fertilizing. The situation is a win-win for gardeners and pollinators.
1. Which section of a website is the text probably taken from?
A. Around the globe. B. Technology report.
C. The secret of nature. D. Healthy Lifestyle.
2. Why should we avoid planting non-native species?
A. They attract more insects. B. They do harm to native plants.
C. They turn soil into desert. D. They break the balance of nature.
3. In what aspect are native plants superior to non-native plants?
A. They produce more oxygen. B. They prevent flooding more effectively.
C. They need less care. D. They add more nutrients to the soil.
4. What does the author advise us to do?
A. Take effective measures to protect insects.
B. Raise environmental awareness on Earth Day.
C. Make great effort to better the planet’s health.
D. Plant native plants to support local environment.

答案： C@@D@@C@@D

B
Why don’t we have eyes in the back of our heads? There are at least two reasons. Eyes are biologically expensive things to make and rear-view（后视）eyes don’t fit well into the human evolution.
Even animals，such as rabbits，whose main survival advantage is rear vision，have only the side eyes. Rear vision is not so important. There are other species that have evolved this ability by moving the position of their eyes relative to the rest of their head. Many birds have their eyes positioned at the side of their head，allowing them a very wide angle of vision and，in the case of some birds such as the woodcock，they are positioned so they can actually achieve 360-degree vision. It is also obvious that spiders，which tend to have many eyes，only have them facing forwards.
Humans，and probably some other animals，do have another adapted sense to make it up. Many experiments showed that sounds behind the head were noticed by a listener more than sounds before the head，especially if a listener was in a dark room. So，our ears can make up for the lack of rear vision. You can look at it another way. Rear vision is useful only if the potential threat is visible. During human evolution，that was most often not the case.
Finally，there is often more than one potential “solution” to a given problem. In many species，the answer to maintaining 360-degree awareness of surrounding danger is to rely on many eyes. Social behavior is common in the animal kingdom and one reason for this is that there is safety in numbers. You might be looking the wrong way when a tiger approaches，but if your teammates raise the alarm，this is as effective as having eyes in the back of your head.
5. Why do humans have no rear-view eyes?
A. They are bad for human survival. B. They are replaced by other organs.
C. They are less likely to spot the danger. D. They are abandoned by natural selection.
6. What is the purpose of Paragraph 2?
A. To state rear-view eyes aren’t a must for survival.
B. To explain why animals have other functional eyes.
C. To prove rabbits，birds and spiders are very special.
D. To show rear-view eyes are against the natural selection.
7. What does the underlined word “that” in Paragraph 3 refer to?
A. Sensitive hearing. B. The visible threat behind the head.
C. The sound behind the head. D. Rear vision.
8. Where does the text most likely come from?
A. A travel brochure. B. Fiction.
C. A science magazine. D. A book review.

答案： D@@A@@B@@C