六、阅读理解。
① In many people's eyes, plants are quiet and passive(被动的). They can't talk. They can't walk. And they can't think like us. Or can they?
② The BBC documentary series, *The Green Planet*, gives us a new look at plants. It finds the wonderful and dramatic ways that plants behave. “*The Green Planet* shows the secret lives of plants on the Earth,” editor Elle Hunt wrote in *New Scientist*.
③ Plants compete(竞争) against each other to live. Each species(物种) has its own ways of defense(防御). In tropical(热带的) rainforests, different kinds of plants compete for sunlight. The forest floor is described as a “battlefield(战场)” in the documentary.
④ Plants also help each other and even communicate. In deserts, the roots of the Euphrates poplar(胡杨) are connected. If a tree finds water, it will share it with others through the roots. Studies also show that plants use fungus(真菌) in the soil as a way to “talk” to each other. It's kind of like how Wi-Fi works. If a tomato plant gets a leaf disease, it can tell nearby plants about it.
⑤ The documentary not only lets us feel amazed at the plant world but also pushes us to understand that plants are important. “Plants are the basis of all life, including ourselves. We depend on them for every mouth of food that we eat and every lungful of air that we breathe,” said David Attenborough, presenter of the series. It's time to look after wild plants just as carefully as our houseplants.
( )1. What is *The Green Planet*?
A. A drama.
B. Science fiction.
C. A short video.
D. A documentary.
( )2. What is the structure(结构) of the passage?

( )3. Para. 3 and Para. 4 tell us how wonderful and dramatic plants are by ______.
A. asking questions
B. giving examples
C. giving reasons
D. presenting numbers

D
; A
; B