题目内容
— Yes, but not clearly.
B．Can
C．Must
D．May
全优考典单元检测卷及归类总复习系列答案We have always been warned of the dangers of forest fires. They cause _____ 85 _____ to a forest. They kill many plants and animals in an eco-system, which is a group of living things and their environment. But have you ever heard of a forest fire that can be _____86_____ for a forest? People start some of the fires with a special reason to actually do good to the eco-system.
In fact, fires are a natural part of any eco-system. Without fires, the oldest and largest trees would stop sunlight from reaching the forest floor. Fires can _____87_____ some of these old trees. When the trees die, they provide something good for the earth. New trees can grow strong and healthy in their place.
Some trees even need fires to grow. These trees hold their seeds (种子) inside. Heat from a fire allows the coat of the seeds to open up. Then the seeds fall to the ground and have the _____88____ to grow/
Scientist, who know about nature’s needs, start some of these fires, called controlled burns. A fire is started and kept under control. This way, the fire does not spread out of the area or _____89_____ a after forest fires, they can go hungry _____90_____ their food has been damaged in the fire. Small, controlled fires mean than animals will not have to move far to find food. After some time, small plants begin to grow. Animals return soon after the plants return. This _____91_____ makes an eco-system.
So the next time you hear about a forest fire, think about the good as well as the bad. It may take a new eco-system a while to return, but it will likely come back stronger and healthier than ever.
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根据短文内容，用方框中所给词语的适当形式填空，使文章通顺、完整。（每词限用一次）
| first, use, be, another, buy, open, whenever, talk, but also, touch |
“Excuse me” is 【小题7】short polite usage. We use it as the same as “Thank you”. When you hear someone say so behind you, you’d got to know that somebody wants to walk past you without 【小题8】 you. It is not polite to interrupt (打断) others while they are 【小题9】. If you want to have a word with one of them, please say “Excuse me” 【小题10】, and then begin to talk. You should also do so when you want to cough or make any unpleasant noise before others. Let’s say “Thank you” and “Excuse me” on the right occasion.