Along the river banks of the Amazon and the Orinoco there lives a bird that swims before
it can fly, flies like a fat chicken,eats green leaves, has the stomach of a cow and has claws
on its wings when young.They build their homes about 4.6 m above the river, an important
feature (特征) for the safety of the young.It is called the hoatzin.
In appearance, the birds of both sexes look very much alike with brown on the back
and cream and red on the underside.The head is small, with a large set of feathers on the
top,bright red eyes, and blue skin.Its nearest relatives are the common birds, cuckoos.Its
most striking feature, though, is only found in the young.
Baby hoatzins have a claw on the leading edge of each wing and another at the end of
each wing tip.Using these four claws,together with the beak(喙),they can climb about in the
bushes, looking very much like primitive birds must have done.The hoatzins, however, live
in the modern world.
During the drier months between December and March hoatzins fly about the forest in
groups of 20 to 30 birds, but in April,when the rainy season begins, they collect together in
smaller living units of two to seven birds for producing purposes.
When danger comes in the form of a snake or a monkey, the young hoatzins-maybe
three in one family-jump over the side and into the river.They swim about under the water
until it is safe to return and then, using their claws, lift themselves up through the branches
and get back home.When they have learned to fly they lose their claws and escape enemies
not by swimming but by flying off, in a slow and heavy way, to a neighbouring tree.
Quick Facts | |
Size: | 14m18m in length; 3050 tons in weight |
Living environment: | Open ocean and shallow coastline waters |
Migration: | From warm tropical (热带的) waters, where they breed, to cold polar waters, where they eat |
Diet: | Shellfish, plants and fish of small size |
Hunting: | Sometimes in groups, in which several whales form a circle under the water, blowing bubbles that form a “net” around a school of fish.The fish are then forced up to the surface in a concentrated mass. |
Current state: | Endangered: it is estimated that there are about 50007500 humpback whales worldwide |
阅读理解. | |
Don"t you think your schoolbag is too heavy to bear? The e-schoolbag will free you from the weight. It is said that e-schoolbags are going to be brought into use in Chinese middle schools soon. An experiment with several hundred e-schoolbags will begin in seven cities: Beijing, Shanghai, Dalian, Shenzhen, Chongqing, Taiyuan and Shijiazhuang. And the e-schoolbags are going to cover all over China if the experiment shows to be successful. In fact, the e-schoolbag should perhaps be called an e-notebook. It is a small hand-held computers for school students. Heavy schoolbags have long been a serious problem for school students. The average schoolbag of middle school students weighs up to 5 kilos. But the e-schoolbag will change everything. It is much lighter than a usual schoolbag, weighing under 1 kilo. Also, it is no bigger than a usual book, but it can still hold all the things for study, such as a textbook, a notebook and exercise book. They could be made into chips that are as small as a stamp. The students can read the text page by page on the screen. They can still take notes using a special electronic pen. If they want to know the meaning or the pronunciation of a new word, or even e-mail their teachers, it"s just a press of a button. In some foreign countries, it is becoming common. But it is hard to tell when people will receive this new form of study. Some say that e-textbooks can easily be broken, some say that it is not good to students" eyesight to look at the screen for long.But only time will tell. | |
1.The e-schoolbag has many functions EXCEPT _______. | |
A. It can pronounce the words. B. It can send e-mails. C. It can be used as a dictionary. D. It can phone somebody. | |
2.According to the passage, the e-schoolbags _______. | |
A. are not heavy as before but still large B. are used as an experiment in Tianjin C. are made of metal D. are going to cover China if it shows to be successful | |
3.Which of the following statement is TRUE? | |
A. All the students in China will use this new schoolbag. B. We can do a lot of work based on the programmers of the chips. C. The e-notebooks are very perfect. D. We will not make notes because the e-notebook can make all by itself. | |
4.Which of the following can be the general title of the passage? ______ | |
A. An Experiment In China B. Please Change Your Schoolbag C. A New Invention, A New Schoolbag D. Chips | |
阅读理解. | |
"If you talk to the plants, they will grow faster and the effect is even better if you"re a | |
1.What does the passage talk about? | |
A. Plants enjoy men"s voices than women"s. B. A botanical experiment in a museum. C. Voice"s influence on plant growing. D. Strange phenomenon at Royal Horticultural Society. | |
2.What does the underlined sentence in paragraph 4 mean? | |
A. Plants need sound as well as rain and light. B. Sound is basic for the plant to grow. C. Sound has a good effect as rain or light does. D. Plants can"t live without sound, rain or light. | |
3.Sarah Darwin is most likely a (an)_____. | |
A. botanist B. gardener C. astronomer D. environmentalist | |
4.What can we learn from the passage? | |
A. The experiment ended in May. B. Scientist can explain the findings clearly. C. Plants enjoy listening to the passages from masterpieces. D. The findings are of great importance to human beings. |