1 . Walk through the Amazon rainforest today and you will find it is steamy, warm, damp and thick. But if you had been around 15,000 years ago, during the last ice age, would it have been the same? For more than 30 years, scientists have been arguing about how rainforests like the Amazon might have reacted to the cold, dry climates of the ice ages, but until now, no one has reached a satisfying answer.
Rainforests like the Amazon are important for mopping up CO2 from the atmosphere and helping to slow global warming. Currently the trees in the Amazon take in around 500 million tons of CO2 each year: equal to the total amount of CO2 giving off in the UK each year. But how will the Amazon react to future climate change? If it gets drier, will it still survive and continue to draw down CO2 ?
Scientists hope that they will be able to learn in advance how the rainforest will manage in the future by understanding how rainforests reacted to climate change in the past. Unfortunately, getting into the Amazon rainforest and collecting information are very difficult. To study past climate, scientists need to look at fossilized pollen, kept in lake mud. Going back to the last ice age means drilling deep down into lake sediments （沉淀物）which requires specialized equipment and heavy machinery. There are very few roads and paths, or places to land helicopters and aeroplanes. Rivers tend to be the easiest way to enter the forest, but this still leaves vast areas between the rivers completely unsampled（未取样）.So far, only a handful of cores have been drilled that go back to the last ice age and none of them provide enough information to prove how the Amazon rainforest reacts to climate change.
1. What does the underlined phrase “mopping up” in the second paragraph mean?| A．Giving up. | B．Giving out. |
| C．Wiping out. | D．Taking in. |
| A．It’ll get drier and continue to remove CO2 . |
| B．There is no exact answer up to present. |
| C．It’ll get warmer and then colder and drier. |
| D．It’ll remain steamy, warm, damp and thick. |
| A．It’s important to drill deep down into lake sediments to collect information. |
| B．It’s impossible to prove how climate changes in the Amazon rainforest. |
| C．It’s hard to collect information for studies of the past climate in the Amazon rainforest. |
| D．It’s necessary to have specialized equipment and machinery to study the past climate. |
| A．Studies of the Rainforests |
| B．Climates of the Amazon |
| C．Secrets of the Ice Age |
| D．Changes of the Rainforests |
2 . How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush and it lets you track your performance on your phone.
The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection.
The toothbrush will be able to teach you to brush right (don’t forget the insides of the teeth!) and make sure you’re brushing long enough. “It’s kind of like having a dentist actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor.
The toothbrush will also be able to talk to other applications on your phone, so developers could, for example, create a game controlled by your toothbrush. You could score points for beating monsters among your teeth. “We try to make it smart and fun,” Serval says.
Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said “yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.
The company says the Kolibree will go on sale this summer, from $99 to $199, and the U.S. is the first target market.
1. All of the following statements are wrong except ____________.| A．It can sense how users brush their teeth. |
| B．It can track users’ school performance. |
| C．It can check users’ fear of seeing a dentist. |
| D．It can help users find their phones. |
| A．You will find it meaningful to see a dentist. |
| B．You should see your dentist on a day-to-day basis. |
| C．You can brush with the Kolibree as if guided by a dentist. |
| D．You’d like a dentist to watch you brush your teeth every day. |
| A．You can use the toothbrush to update mobile phones. |
| B．You can play games by using the tooth brush . |
| C．Brushing teeth can kill some bacteria(细菌) in the mouth. |
| D．Brushing teeth helps to play games better. |
| A．They were unwilling to brush their teeth. |
| B．They often failed to clean their toothbrushes. |
| C．They preferred to use a toothbrush with a dry head. |
| D．They liked brushing their teeth after Serval came home. |
| 我眼中的财富 | 至少两点，比如友谊、理想 …… |
| 拥有它们的意义 | 1. 拥有它们对学习、生活的作用 2. 失去它们对学习、生活的影响 |
| 获取它们的途径 | （请考生根据自己的经历或感想，提出至少两种做法） |
注意：
1. 词数150左右。开头已经写好，不计入总词数。
2. 作文中不得提及考生所在学校和本人姓名。
My Treasures
In our life, we have treasures like money, houses and cars, etc. However, we have a lot more hidden treasures, such as knowledge, health and experiences. As a senior student, I think the most important treasures in our life are
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