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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.
85. A) illness B) difficulty C) damage D) flood
86. A) helpful B) powerful C) harmful D) awful
87. A) take the place of B) get ready for C) be bad for D) get rid of
88. A) time B) water C) chance D) skill
89. A) discover B) cover C) but D) waste
90. A) because B) although C) but D) so
91. A) almost B) again C) never D) even
查看习题详情和答案>>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.
1.A) illness B) difficulty C) damage D) flood
2. A) helpful B) powerful C) harmful D) awful
3. A) take the place of B) get ready for C) be bad for D) get rid of
4.A) time B) water C) chance D) skill
5.A) discover B) cover C) but D) waste
6. A) because B) although C) but D) so
7.A) almost B) again C) never D) even
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When I was a little girl，my mom liked to make breakfast food for dinner every now and then.And I remember one__1__when my mom placed a plate of eggs，sausage and extremely__2__toast (土司面包) in front of my dad.I remember__3__to see if anyone noticed！__4__all my dad did was reach for his toast，__5___at my mom and ask me how my day was at school.
When I__6__from the table that evening，I remember hearing my mom__7__to my dad for burning the toast.And I’ll__8__forget what he said，“Baby，I love burnt toast.” Later that night，I went to__9__Dad good night and I asked him if he really__10__his toast burnt.He wrapped me up in his__11__and said，“Debbie，your mom had a__12__day at work today and she’s really tired.And besides，a little burnt toast never__13__anyone！” In bed that night，I thought about the scene at dinner and the__14__my dad showed to my mom.
To this day，it’s a cherished (珍贵的)__15__from my childhood that I’ll never forget.And it’s one that came to__16__just recently when Jack and I sat down to eat dinner.
As I__17__the plate in front of Jack，I waited for a(n)__18__about the burnt toast.But all I got was，“Thank you，dear！This is__19__.I know you had a hard day！” Just then，I thought about my parents，and was quietly thankful for having a__20__where burnt toast wasn’t a deal?breaker either!
1．A.noon B．afternoon
C．morning D．night
2．A.expected B．burnt
C．sweet D．delicious
3．A.being encouraged B．being allowed
C．waiting D．refusing
4．A.Yet B．Although
C．So D．Until
5．A.laugh B．smile
C．shout D．stare
6．A.got up B．got back
C．broke away D．put forward
7．A.report B．shout
C．apologize D．complain
8．A.almost B．never
C．often D．hardly
9．A.ask B．greet
C．tell D．kiss
10．A.liked B．got
C．cooked D．made
11．A.head B．heart
C．arms D．hands
12．A.boring B．hard
C．disappointing D．sad
13．A.hurts B．comforts
C．invites D．hates
14．A.interest B．surprise
C．kindness D．satisfaction
15．A.feeling B．story
C．choice D．memory
16．A.life B．mind
C．an end D．a conclusion
17．A.set down B．took away
C．finished up D．washed up
18．A.answer B．question
C．comment D．suggestion
19．A.possible B．true
C．terrible D．great
20．A.condition B．future
C．situation D．marriage
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