1、B. The relatives and enemies of hoatzinsC. Primitive birds and hoatzins of the Amazon.D. The appearance and living habits of hoatzins( )2. Young hoatzins are different from their parents in that _. A. they look like young cuckoosB. they have claws on the wingsC. they eat a lot like a cowD. they live
2、 on river banks ( )3. What can we infer about primitive birds from the text? A. They had claws to help them climb.B. They could fly long distances C. They had four wings like hoatzinsD. They had a head with long feathers on the top ( )4. Why do hoatzins collect together in smaller groups when the ra
3、iny season comes? A. To find more food.B. To protect themselves betterC. To keep themselves warmD. To produce their young.B The 2012 London Olympics had enough problems to worry about. But one more has just been added a communications blackout caused by solar storms. After a period of calm within th
4、e Sun, scientists have detected the signs of a flesh cycle of sunspots that could peak in 2012, just in time for the arrival of the Olympic torch in London. Now scientists believe that this peak could result in vast solar explosions that could throw billions of tons of charged matter towards the Ear
5、th, causing strong solar storms that could jam the telecommunications satellites and interact links sending five Olympic broadcast from London . “The Suns activity has a strong influence on the Earth. The Olympic could be in the middle of the next solar maximum which could affect the functions of co
6、mmunications satellites,”said Professor Richard Harrison ,head of space physics at the Rutherford Appleton Laboratory in Oxfordshire. At the peak of the cycle, violent outbursts called coronal mass ejections(日冕物质抛射)occur in the Suns atmosphere, throwing out great quantities of electrically-charged m
7、atter.” A coronal mass ejection can carry a billion tons of solar material into space at over a million kilometers per hour. Such events can expose astronauts to a deadly amount, can disable satellites, cause power failures on Earth and disturb communications, ” Professor Harrison added. The risk is
8、 greatest during a solar maximum when there is the greatest number of sunspots.Next week in America, NASA is scheduled to launch a satellite for monitoring solar activity called the Solar Dynamics Observatory(SDO), which will take images of the Sun that 10 time clearer than the most advanced televis
9、ions available.The Rutherford Appleton Laboratory helped to make the high tech cameras that will capture images of the solar flares(太阳耀斑)and explosions as they occur.Professor Harrison Hold away, the labs director said that the SDO should be able to provide early warning of a solar flare or explosio
10、n big enough to affect satellite communications on Earth “If we have advance warning, well be able to reduce the damage. What you dont want is things switching off for a week with no idea of whats caused the problem, ” he said.( )1. The phrase” communications blackout” in paragraph 1 most probably r
11、efers to _ during the 2012 Olympics.A. the extinguishing of the Olympic torchB. the collapse of broadcasting systemsC. the transportation breakdown in LondonD. the destruction of weather satellites( )2. What can be inferred about the solar activity described in the passage? A. The most fatal matter
12、from the corona falls onto Earth.B. The solar storm peak occurs in the middle of each cycle.C. It takes several seconds for the charged matter to reach Earth.D. The number of sunspots declines after coronal mass ejections.( )3. According to the passage, NASA will launch a satellite to _. A. take ima
13、ges of the solar systemB. provide early warning of thunderstormsC. keep track of solar activitiesD. improve the communications on Earth( )4. Which of the following might be the best title of the passage? A. Solar Storm: An Invisible KillerB. Solar Storm: Earth Environment in DangerC. Solar Storm: Th
14、reatening the Human RaceD. Solar Storm: Human Activities to Be TroubledCIn the kitchen of my mothers houses there has always been a wooden stand (木架) with a small notepad(记事本)and a hole for a pencil.Im looking for paper on which to note down the name of a book I am recommending to my mother. Over fo
15、rty years since my earliest memories of the kitchen pad and pencil, five houses later ,the current paper and pencil look the same as they always did. Surely it cant be the same pencil? The pad is more modern, but the wooden stand is definitely the original one.“Im just amazed you still have the same
16、 stand for holding the pad and pencil after all these years.” I say to her, working back into the living room with a sheet of paper and the pencil. “You still use a pencil. Cant you afford a pen?”My mother replies a little sharply.” It works perfectly well. Ive always kept the stand in the kitchen.
17、I never knew when I might want to note down an idea, and I was always in the kitchen in these day.” Immediately I can picture her, hair wild, blue housecoat covered in flour, a wooden spoon in one hand, the pencil in the other, her mouth moving silently. My mother smiles and says,” One day I was coo
18、king and watching baby Pauline, and I had a brilliant thought, but the stand was empty. One of the children must have taken the paper. So I just picked up the breadboard and wrote it all down on the back. It turned out to be a real breakthrough for solving the mathematical problem I was working on.
19、”This story which happened before I was born-reminds me how extraordinary my mother was, and is also a gifted mathematician. I feel embarrassed that I complain about not having enough child-free time to work. Later, when my mother is in the bathroom, I go into her kitchen and turn over the breadboar
20、ds. Sure enough, on the back of the smallest one, are some penciled marks I recognize as mathematics. Those symbols have traveled unaffected through fifty years, rooted in the soil of a cheap wooden breadboard, invisible(看不到的)exhibits at every meal.( )1. Why has the authors mother always kept the no
21、tepad and pencil in the kitchen? A. To leave messages.B. To list her everyday tasks.C. To note down maths problemsD. To write down a flash of inspiration ( )2. What is the authors original opinion about the wooden stand? A. It has great value for the family.B. It needs to be replaced by a better one
22、.C. It brings her back to her lonely childhood.D. It should be passed on to the next generation.( )3. The author feels embarrassed for_. A. blaming her mother wronglyB. giving her mother a lot of troubleC. not making good use of time as her mother didD. not making any breakthrough in her field( )4.
23、What can be inferred from he last paragraph? A. The mother is successful in her careerB. The family members likes traveling.C. The author had little time to play when youngD. The marks on the breadboard have disappeared( )5. In the authors mind, her mother is _. A. strange in behavior.B. keen on her
24、 research.C. fond of collecting old things.D. careless about her appearanceDAsk someone what they have done to help the environment recently and they will almost certainly mention recycling in the home is very important of course. However, being forced to recycle often means we already have more mat
25、erial than we need. We are dealing with the results of that over-consumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place. The total amount of packaging increased by 12% between 1999 and 2005. It now makes up a third of
26、 a typical households waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard.Too much packaging is doing serious damage to the environment. The UK, for example, is running out of it for carrying this unnecessary waste. If such packaging is burnt, it g
27、ives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place. Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However
28、, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.But this is not just about supermarkets. It is about all of us. We have learned to associate packaging with quality. This is especially true of food. But is also applies to a wide range of consumer products, which often have fa
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