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| 瓶子编号 | 种子的数量 (个) | 种子所处的环境 (其他外界条件均适宜) |
| A | 3 | 少量水,20℃ |
| B | 3 | 无水,20℃ |
| C | 3 | 少量水,—10℃ |
| D | 3 | 水将种子淹没,20℃ |
(2)探究温度对种子萌发的影响,应该用__________两号瓶做对照实验。
(3)请你预期A号、D号瓶的实验结果依次是_______________________(萌发和不萌发),据此可以得出的结论是_____________________________________。
(4)指出本实验设计中的不足是_____________________________________。
(5)如果在严格按照上表的实验条件进行实验的情况下,用于实验的种子最终都没有萌发,原因可能来自_____________________。
(6)若探究光照对该种子的萌发有无影响,请完成下列实验方案设计。
第一步:在两同样瓶加入适量的水,_____________________________;
第二步:________________________ ,另一组瓶置于黑暗的环境中。 查看习题详情和答案>>
Future and Today
It is well known that everyone has his own dream as well as his own future. But do you know what future really is ? I have to say that future is now. That is to say we must treasure every minute now. If we want to have a bright future, we should know how important time is and use it well.
There is an old English saying: “Gain time, gain life.” Then what’s time? Time is something that we can’t see or touch, but we can feel it passing by. Time is always with us. When we are at table, time passes; when we play, time goes by unnoticeable. We always say “Time is money”, but time is even more precious(珍贵的)than money, because when money is spent , we can earn it back. But if time is gone away, it will never return. So, some of us even say time is priceless(无价的).
We should always remember: future is now. For us students, we should try our best to work hard in order to create a great future of our own. We should make the best use of every hour and be the master of today.We should do everything before us as well as possible. And never put off what can be done today till tomorrow.
As we all know , “Time and tide wait for no man.” If you waste today, you will regret tomorrow. So from now on, work hard. Tomorrow will be better, and your future will be brighter .Remember: “No pains, no gains.” Today’s hard work is the cause of tomorrow’s harvest.
Title: Future and Today
| Opinions | Supporting details |
| Future is now. | Everyone has his own dream as well as his own future. If we want to have a bright future, we should know the 【小题1】 of time and make every minute【小题2】 . |
| 【小题3】 is priceless. | Time is money, but time is even more valuable than money, because when money is spent , we can earn it back. But 【小题4】 time will return no more. |
| Be masters of today | Today’s hard work【小题5】 to tomorrow’s harvest. As students, we should never put off what can be done today till tomorrow and we should try our【小题6】 to do everything well. |
阅读填词(共10小题,每小题1分,满分10分)
阅读短文,根据所读内容在短文后图表中的空格里填入恰当的单词。(每空填一个单词)
Alice is my pen friend. She is a 16-year-old girl from the UK, but now she lives in China. She is a middle school student in Nanjing. She likes going to school, but there are some things she doesn’t like, such as PE. She enjoys playing sports. She thinks sports are interesting and exciting. But she doesn’t like doing physical exercises in PE classes. She feels that they are boring! Her favourite subject is Science. It seems that the amazing and useful Science attracts her. She thinks she is on the way to be a scientist. She wishes to invent things to make the world more and more beautiful.
In her free time, she often goes to the beach. She loves just sitting around and talking to friends there. She’s getting better at understanding boys, but she hates listening to hours of talk about football. “It’s not interesting at all!” she once said to me.
That is my penfriend Alice.
Information about Alice
Basic information Name: Alice Age: sixteen1. old.
Birth place: in the UK Living now: in China
What Why /For what
Likes Playing sports. Interesting and 2.
Going to the 3. Sitting around
and 4. to friends.
Favourite subject: Science 5. and useful.
Dislikes Having 6. classes. Physical exercises are 7.
8. talks about football. Not interesting at all.
Wishes To be a scientist. Be 9. by Science.
To invent things. Make the world 10. beautiful.
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阅读短文,根据所读内容在短文后图表中的空格里填入一个恰当的单词
Trees should be pruned(修剪)when it is necessary. A good gardener will cut away the overgrown and unwanted branches(树枝). They can make the trees more beautiful and healthier. But sometimes we’d better leave the trees to grow in their own way. Because the inexperienced gardeners will damage(毁坏) the trees.
First, pruning may be done to make sure that trees in good shape or size. Maybe people want to get a tree of the right height and at the same time to help the growth of small side branches. Then people can make the tree’s appearance thick or give it a special shape.
Secondly, pruning may be done to make the tree healthier. You may cut out diseased or dead branches. The health of a tree may be encouraged by removing branches that are blocking up (封闭)the center and so stopping the free movement of air.
One result of pruning is that an open wound is left on the tree and this provides an easy chance for disease, but the wound will heal(愈合). Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is in danger. Every gardener should try to reduce that danger of death as soon as possible. It is important to make the area, which has been pruned, smooth and clean, because healing will be slowed down by roughness(粗糙). You should allow the cut surface to dry for a few hours and then pain it with one of the special materials. Pruning is usually done in winter, because you can see the shape of the tree clearly and also it is very unlikely(未必的) that the cuts you make will bleed. If this happens, it is impossible to paint them properly(合适地).
| Pruning trees | |
| A good gardener prunes a tree when it is 【小题1】 | |
| 【小题2】 for pruning trees | First, make the trees in 【小题3】 shape or size. |
| Second, make the trees 【小题4】 | |
| One 【小题5】 of pruning trees. | An open wound 【小题6】 easy 【小题7】 for disease. |
| Reduce the danger of the tree’s death | Make the wound 【小题8】 and clean. |
| The 【小题9】 of the death of a tree | Paint the wound 【小题10】 it dries. |
阅读短文,根据所读内容在短文后图表中的空格里填入一个恰当的单词
Trees should be pruned(修剪)when it is necessary. A good gardener will cut away the overgrown and unwanted branches(树枝). They can make the trees more beautiful and healthier. But sometimes we’d better leave the trees to grow in their own way. Because the inexperienced gardeners will damage(毁坏) the trees.
First, pruning may be done to make sure that trees in good shape or size. Maybe people want to get a tree of the right height and at the same time to help the growth of small side branches. Then people can make the tree’s appearance thick or give it a special shape.
Secondly, pruning may be done to make the tree healthier. You may cut out diseased or dead branches. The health of a tree may be encouraged by removing branches that are blocking up (封闭)the center and so stopping the free movement of air.
One result of pruning is that an open wound is left on the tree and this provides an easy chance for disease, but the wound will heal(愈合). Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is in danger. Every gardener should try to reduce that danger of death as soon as possible. It is important to make the area, which has been pruned, smooth and clean, because healing will be slowed down by roughness(粗糙). You should allow the cut surface to dry for a few hours and then pain it with one of the special materials. Pruning is usually done in winter, because you can see the shape of the tree clearly and also it is very unlikely(未必的) that the cuts you make will bleed. If this happens, it is impossible to paint them properly(合适地).
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Pruning trees |
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A good gardener prunes a tree when it is 1. |
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2. for pruning trees |
First, make the trees in 3. shape or size. |
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Second, make the trees 4. |
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One 5. of pruning trees. |
An open wound 6. easy 7. for disease. |
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Reduce the danger of the tree’s death |
Make the wound 8. and clean. |
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The 9. of the death of a tree |
Paint the wound 10. it dries. |
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