《2025年创新设计高中英语选择性必修第一册北师大版》

Ⅲ.Read for details
Read the passage carefully and choose the best answers.
1. How many times have there been up to today when life on Earth has almost died out?
A. Once.
B. Five times.
C. Six times.
D. More than ten times.
2. What may happen if the sixth mass extinction occurs?
A. All species on the Earth will die out.
B. The Earth will become better to live.
C. Humans will be in the face of dying out.
D. The balance in nature will get more stable.
3. What is the purpose of paragraph 4?
A. To appeal to people to protect the Earth.
B. To blame people for destroying the environment.
C. To urge the government to take action.
D. To warn the public to reduce their destructive behaviour.
4. What can we infer from the last paragraph?
A. It’s never too late to save the Earth.
B. It’s promoted to take an electric bus to work.
C. We should apply modern technology to farming.
D. Endangered animals are encouraged to live in the wild.
5. What is the author’s attitude towards avoiding the sixth extinction?
A. Pessimistic.
B. Uncertain.
C. Neutral.
D. Optimistic.

答案： 1.B 2.C 3.A 4.B 5.D

Ⅰ.难句解构
1. Although it is not unusual for species to die out naturally, the rate at which this is now happening is cause for concern.
[学会断句] 本句是一个由 Although 引导的 让步 状语从句,主句中包含一个由“介词 + 关系代词”(at which)引导的 定语 从句。
尝试翻译：虽然物种的自然灭绝并不罕见，但现在灭绝的速度让人担忧。
2. If a sixth mass extinction occurs, scientists who have studied the issue believe that up to three quarters of all species on Earth could die out.
[学会断句] 本句结构较为复杂,由 If 引导的 条件 状语从句,who 引导的 定语 从句和 that 引导的 宾语 从句复合而成。
尝试翻译：研究该问题的科学家们相信，如果发生第六次大灭绝，地球上多达四分之三的物种有可能灭绝。

答案： 1.让步 定语 虽然物种的自然灭绝并不罕见，但现在灭绝的速度让人担忧。
2.条件 定语 宾语 研究该问题的科学家们相信，如果发生第六次大灭绝，地球上多达四分之三的物种有可能灭绝。

Ⅱ.翻转课堂(课文语法填空)
Fill in the following blanks after reading the passage.
Extinctions, where entire species 1. are wiped (wipe) out, are not 2. unusual (usual) in our Earth’s history. In the last 500 million years, there 3. have been (be) five times when life on Earth has almost ended. The reasons 4. for extinctions are 5. varied (vary), of which the decrease of the oxygen content of the sea is included. Many scientists say we’re now entering the Earth’s 6. sixth (six) mass extinction and this time human activity will be 7. to blame (blame). That is, human activity has negatively 8. affected (affect) all other species on Earth, including animals and plants, 9. which will put humans at risk of 10. dying (die) out. To save the Earth, steps must be taken, such as saving endangered animals and making use of wind and solar energy.

答案： 1.are wiped 2.unusual 3.have been 4.for 5.varied/various 6.sixth 7.to blame 8.affected 9.which 10.dying