2020年整理科技英语视听说复习提纲(完整版).pdf

科技英语视听说复习提纲

Lesson 1

The Private Life of Plants 1

1、What problems do plants have to face throughout their lives so as to survive?

(1)Fight seasons (2)compete for mates (3)invade new territories

2. Are fungi plants? What do fungi produce?

Fungi produce spores which are similar to seeds.

3. How do the seeds of dandelions fly?

A special apparatus is needed by the seeds of dandelions to fly. Each seed of the dandelion is fitted with its own individual parachute.

The Private Life of Plants 2

1. What is the begonia’s secret of surviving on the dim forest floor?

The secret of begonia surviving on the dim forest floor lies in its leaves which undersides is red.

2. How do leaves reduce the problem of water lying on their surface?

There are four ways.

The first one is that the leaves are tough enough to withstand the pounding of water. The second one is that the leaves have gutters to carry away the water.

The third one is leaves have pointed tips at the end so as to drain water rapidly.

The last one is that leaves have the dense hairs to keep their pores free.

3. What is the dramatic solution a sensitive mimosa possesses to defend itself?

One touch can make the leaves fold, another tap can make it flop to the ground.

Global Warming

1. What are the three factors causing the collision between our civilization and the earth?

(1)population (2)our way of thinking

(3)the scientific and technological revolution.

2. How to balance the economy and the environment?

(Open-Ended Question)

3. What should we do to solve the climate crisis to secure our future or to save our planet Earth?

(Open-Ended Question)

Big Freeze

1. What might be the major cause of the Big Freeze?

The major causes of the big freeze are volcanic eruptions, global warming and changes in the ocean currents.

2. Please name the five ways mentioned in the state of the planet that we care affecting life’s diversity on Earth.

(1)over-harvesting (2)the introduction of alien species

(3)the destruction of habitats (4)islandisation (5)pollution.

Journey of Life 1

1. What is national selection?

Any trait that increases the possibility of youngster surviving will be passed on in its genes.

2. There is an enormous variety of life on the planet, how did life begin?

The single-cell living things began at 3 billion years ago. The cells pulling together like jelly fish began at 670 million years ago. The animals’ so ft bodies turned hard like snails began at around 570 million years ago.

3. Where did all life begin, and why?

All the life begins in the sea .Because in the sea, the temperature hardly changes and the water can protect against the pull of gravity and the burning sun.