题目内容：

    Most people make treehouses using a pile of wood, a hammer, and some nails. Mitchell Joachim, an architect from the Massachusetts Institute of Technology, has a(n) _______ vision. He pictures a day when homes will be created from_______.

Joachim's vision _______ an idea called bleaching (编织), where tree branches are grown so that they _______ weave together. Since the growth patterns of trees are _______ by wind and sunlight, it may be _______ to control the way a tree develops.

These Fabricated Tree House Habitats would use trees grown into shapes as housing. One of the _______ of these designs is that trees would not have to be cut down _______.

"A 100 percent treehouse would take _______ to create," Joachim said. ________ the climate, a house could take anywhere from 5 to 30 years to grow. Fortunately, there's a way to ________ the process. Joachim suggests including ________ materials such as sod (草皮), grasses and living branches in the housing designs. "This material would be able to move ________ the house grows," Joachim said.

A home would become an actual ecosystem, a community of plants, animals, and bacteria working together. The trees would also give off water vapor that would assist in ________ the homes. Solar panels and wind would help provide  ________. The tree homes might even have soil pockets, ________ plants could grow from the structure itself.

Work has already ________ on Joachim's first design—a house made from 50 percent recycled and 50 percent living things. Joachim is confident about the ________ of his work, as he uses natural products ________ nature.

"The environment and its study are very important. We need to respect nature, don’t ________,” he said.

1.A.similar B.excellent C.strange D.different

2.A.living trees B.small trees C.living things D.wild plants.

3.A.agrees with B.is considered as C.is based on D.comes up with

4.A.luckily B.naturally C.partly D.separately

5.A.effected B.affected C.attempted D.intended

6.A.possible B.impossible C.important D.necessary

7.A.designers B.purposes C.disadvantages D.advantages

8.A.on purpose B.for wood C.by chance D.at ease

9.A.troubles B.great efforts C.a few months D.years

10.A.Depending on B.Judging by C.Protected from D.Suffering from

11.A.speed up B.carry on C.slow down D.smooth away

12.A.compound B.chemical C.ecological D.industrial

13.A.for B.as C.so D.because

14.A.cleaning B.heating C.cooling D.lighting

15.A.food B.energy C.beauty D.charming

16.A.where B.which C.that D.and

17.A.stopped B.completed C.controlled D.begun

18.A.pleasure B.happiness C.benefit D.importance

19.A.going against B.without destroying C.by destroying D.coming from

20.A.think you are it B.do it ourselves C.take it for granted D.put it like this