题目内容
Human is famous ________ its rice and fish.
- A.at
- B.with
- C.of
- D.for
解析：
解析：句意：湖南是鱼米之乡 (以鱼米闻名) 。以某种特征出名，用be famous for结构。故选D。
Climate is the average weather usually taken over a 30-year time period for a particular region and time period. Climate is not the same as weather, but rather, it is the average pattern of weather for a particular region. Weather describes the short-term state of the atmosphere (大气).
The climate is changing. Many agreed that climate change may be one of the greatest threats (威胁) facing the planet. Recent years show increasing temperatures in various regions, and/or increasing extremities (极端性) in weather patterns.
Is the Earth getting warmer? Yes! The Earth has warmed by about 1°F over the past 100 years. But why? Well, scientists are not exactly sure. The Earth could be getting warmer on its own, but many of the world’s leading climate scientists think that things people do are helping to make the Earth warmer.
Global Warming may be a big problem, but can you make a difference? Yes! There are several little things you can do to make a difference. Try carpooling. This will help reduce the amount of fossil fuels going into the atmosphere. Whenever you use electricity, you help put greenhouse gases into the air. Turn off lights, the television, and the computer when you are through with them. Also, planting trees is fun and a great way to reduce greenhouse gases. Trees absorb carbon dioxide, a greenhouse gas, from the air. Finally, don’t forget about recycling.
【小题1】Climate is weather.
| A．the same as | B．different from |
| C．a kind of | D．part of |
| A．only because of human activities |
| B．but scientists are not exactly sure of the reasons. |
| C．and we can do nothing to it. |
| D．and it’s getting warmer on its own |
| A．carpooling | B．saving electricity |
| C．cutting down more trees | D．recycling |
| A．Climate and weather. |
| B．Weather and climate changing. |
| C．Climate changing and global warming. |
| D．Weather and global warming. |
The human body is a living machine, and, like all machines, it needs “fuel” to supply it with energy. This is provided by the food we eat. But how much do we need to stay healthy?
The energy value of food is usually measured in calories(卡). A calorie is the amount of heat required to raise the temperature of 1 kg of water by 1℃. The number of calories people need per day is different, as the picture shows. Also, the number of calories you use at any one moment normally depends on the activity you are in. For example, you need more calories for standing than for sitting, more for running than for walking, and so on.
The energy in food is in the form of three kinds of chemical materials—carbohydrate（碳水化合物）, protein（蛋白质） and fat. Carbohydrate provides 3.8 Cal /gm of the energy, protein 4.0 Cal/gm, and fat 8.8 Cal/gm. Each food contains different amounts of these materials, as the round pictures show.
(P= protein C= carbohydrate F=fat)
【小题1】How many calories are needed to raise the temperature of 5kg of water from 35℃ to 90℃?
| A．55. | B．175. | C．325. | D．275. |
| A．Milk. | B．Rice | C．Peanuts. | D．Milk or peanuts. |
| A．A woman. | B．An office worker. | C．A farmer. | D．A boy aged 16. |
| A．You need more calories for swimming than for mountain climbing. |
| B．A child aged 8 needs the same amount of calories every day as a man over 70 does. |
| C．A woman feeding baby needs over 4 times the amount of calories that a baby does. |
| D．Everyone needs the same amount of calories per day. |
| A．all the energy is in food |
| B．the human body needs energy |
| C．the number of calories depends on your activity |
| D．we must only eat peanuts to get calories |