Air is an odorless (无气味的), invisible (看不见的) gas that surrounds the earth. It is everywhere on the planet. An “empty” drinking glass and an “empty” room, to give two examples, are not really empty. Each is filled with air. When the glass is filled with water, the water pushes the air out of the glass.
Air, as a gas, has no definite (明确的) shape, but, because it is matter, it takes up space. It is easy to prove that air is something that takes up space. Stuff a dry handkerchief into the bottom（底部） of a glass so that it will not fall out when the glass is turned upside-down. Push the upside-down glass; hold it straight into a jar of water till the glass is completely covered. When the glass is taken out of water, the handkerchief will be dry. The air inside the glass takes up space and keeps the water from coming in.What does the underlined word “Stuff” (in Paragraph 2) mean?
| A．Press tightly. | B．Take out. |
| C．Put down. | D．Turn fully. |
The writer tells us that _______.
| A．the experiment is done in the laboratory |
| B．the experiment is done outside the room |
| C．the experiment is easily done |
| D．the experiment is carried out indoors |
Which of the following pictures gives us the correct result?
( W—water; A—air; H—handkerchief )
The world’s astronomers came to their senses yesterday and approved a new definition of the word “planet” that would drop tiny Pluto from the club and relegate it instead to a lesser realm of “dwarf planets.” It was a welcome step away from a proposal that would have kept Pluto as a planet but meantime opened the door for dozens of small, icy bodies on the fringes of the solar system.
The important vote came after fierce debate at a meeting of the International Astronomical Union, which had been considering a proposal to define a planet as any object that orbits a star and is large enough for its own gravity to pull it into a spherical (球形的) shape. That definition was scientifically precise but led to results that offended common sense. An asteroid, a small moon, and another icy ball like Pluto would suddenly have risen to planet-hood, swelling the number of planets to 12, with many more icy rocks likely to qualify as more was learned about them.
Fortunately, the astronomers have now added another requirement to the definition. Planets must not only be large enough to be round, they must also have cleared out the neighborhood around their orbits. Pluto would not qualify — it orbits in a belt of icy debris on the edge of the solar system. Neither would an icy rock nicknamed Xena, which orbits in that same zone, nor Ceres, a big asteroid that marches in the company of other asteroids. Pluto’s moon, Charon, which had qualified under the first proposal, is also out of the running.
Pluto, with its small size and oddball orbit, should never have been deemed a planet in the first place. Henceforth there will be eight planets, at least three dwarf planets, and tens of thousands of “smaller solar system bodies,” like comets and asteroids. Our only regret is that the astronomers chose the name “dwarf planets” for Pluto’s new category instead of abandoning the word entirely when discussing these less-than-planetary bodies. We can know from the passage that the new definition of planet __________.
| A．has been welcomed by all walks of life |
| B．will kick the Pluto out of the planet group in the solar system |
| C．still makes the Pluto as a planet |
| D．will enlarge the number of planets in our solar system into permanently 12 |
After the new definition of “planet” was put forward, all of the following are regarded as planet except________.
| A．Venus |
| B．Ceres |
| C．Mars |
| D．Jupiter |
The writer’s attitudes towards the new definition of “planet” is________.
| A．welcome |
| B．indifferent |
| C．hostile |
| D．neutral |
If the original definition of “planet” had not been changed, there would be the following consequences except that ________.
| A．thousands of icy rocks in space will be classified as planets |
| B．some asteroids big enough to pull itself into a spherical shape will be regarded as planets. |
| C．the Pluto will be relegated to “dwarf planet” |
| D．there will be at least twelve or even more planets in the solar system. |
More and more English-educated Chinese Singaporean parents are realizing the importance for their children to be not only good at the all-important English language, but also at Chinese. China has become a great political and economic superpower and they want their children to become bilingual.
It is common knowledge that, to master any language, especially one’s mother tongue, one must begin from childhood. But there are challenges and barriers for children of English-speak ing homes to succeed in their journey towards bilingualism.
Take my family as an example. While my wife and I are products of English education, we had some foundation (基础) in Chinese which we kept up in our working life. But the language of communication in our home is mainly English.
We are glad that our three children had between 8 and 11 years’Chinese schooling before switching over to English schools. Their foundation in Chinese has become an advantage in their adult life. They can hold their own in the spoken language, but would find it hard to write a business letter in Chinese for lack of usage.
We have a grandson who will be two years old shortly. His parents have given my wife and I the unenviable task of making him bilingual. It is a very tough assignment, as we are with him only a couple of hours on most days. For the rest of the time, he is being surrounded by English sounds by his busy parents.
Fortunately, our perseverance is paying off. After eight months, he has been used to hearing Chinese sounds, and even he can now quite comfortably identify common everyday objects in Chinese. Why is it becoming necessary for some Chinese Singaporean children to learn Chinese?
| A．Because most of the Singaporeans come from China. |
| B．Because their parents are missing their motherland. |
| C．Because China has become a great political and economic superpower. |
| D．Because Chinese is the official language in the UN. |
The underlined word “bilingual”in Paragraph 1 probably means _______ .
| A．a person who knows English |
| B．a person who knows Chinese |
| C．a person who knows only one language |
| D．a person who knows two languages |
What do we know about the author and his children?
| A．He lives in China now. |
| B．His children hate learning English. |
| C．He usually speaks Engliah at home. |
| D．His three children master Chinese very much. |
The author uses the example of teaching his grandson mainly to prove that _______ .
| A．there are challenges for children of English-speaking homes to learn Chinese |
| B．his foundation in Chinese is a big advantage in teaching his grandson |
| C．he is quite good at teaching small children Chinese |
| D．learning Chinese is very popular in Singapore |
We learn from the passage that _______ .
| A．all the children in Singapore need to learn Chinese |
| B．understanding Chinese is becoming an advantage in Singapore |
| C．the author’s children know nothing about Cshinese |
| D．the author feels it easy to teach others Chinese |
Welcome to one of the largest collections of footwear（鞋类）in the world that will make you green with envy. Here at the Footwear Museum you can see exhibits（展品）from all over the world. You can find out about shoes worn by everyone from the Ancient Egyptians to pop stars.
| Room 1 The celebrity（名人）footwear section is probably the most popular in the entire museum. Started in the 1950s there is a wide variety of shoes and boots belonging to everyone from queens and presidents to pop stars and actors! Most visitors find the celebrities' choice of footwear extremely interesting. |
Room 2 Most of our visitors are amazed and shocked by the collection of “special purpose”shoes on exhibition here at the Museum of Footwear. For example , there are Chinese shoes made of silk that were worn by women to tie their feet firmly to prevent them from growing too much! |
| Room 3 As well as shoes and boots the museum also exhibits shoe shaped objects. The variety is unbelievable. For example , there is a metal lamp that resembles a pair of shoes, and Greek wine bottles that like legs! |
The footwear Library People come from all over the world to study in our excellent footwear library. Designers and researchers come here to look up Information on anything and everything related to the subject of footwear. |
Where would you find a famous singer's shoes?
| A．Room 1. |
| B．Room 2. |
| C．Room 3. |
| D．The Footwear Library |
All exhibits in each room _________.
| A．share the same theme |
| B．have the same shape |
| C．are made of the same material |
| D．belong to the same social class |
Which of the following is true according to the text?
| A．The oldest exhibits in Room 1 were made in the 1950s. |
| B．Room 2 is the most visited place in the museum. |
| C．Room 3 has a richer variety of exhibits than the other two. |
| D．Researchers come to the Footwear Library for data. |
The purpose of the text is to get more people to ________.
| A．do research |
| B．design shoes |
| C．visit the museum |
| D．follow celebrities |
When Frida Kahlo’s paintings were on show in London, a poet described her paintings as “ a ribbon （丝带）around a bomb”. Such comments seem to suggest Kahlo had a big influence on the art world of her time. Sadly, she is actually a much bigger name today than she was during her time.
Born in 1907 in a village near Mexico City , Kahlo suffered from polio（小儿麻痹症）at the age of seven. Her spine （脊柱）become bent as she grew older. Then, in 1925, her back was broken in several places in a school-bus accident. Throughout the rest of her life, the artist had many operations, but noting was able to cure the terrible pain in her back. However, the accident had an unexpected side effect. While lying in her bed recovering, Kahlo taught herself to paint.
In 1929, she got married to Diego Rivera, another famous Mexican artist. Rivera’s strong influences on Kahlo’s style can be seen in her early works, but her later works from the 1940s, known today as her best works, show less influence from her husband.
Unfortunately, her works did not attract much attention in the 1930s and1940s, even in her home country. Her first one-woman show in Mexico was not held until 1953.For more than a decade after her death in 1954, Kahlo’s works remained largely unnoticed by the world, but in the 1970s her works began to gain international fame at last.What does the phrase “a much bigger name” in paragraph 1 most nearly mean?
| A．a far better artist |
| B．a for more gifted artist |
| C．a much stronger person |
| D．a much more famous person |
The terrible pain Kahlo suffered was caused by ________.
| A．polio |
| B．her bent spine |
| C．back injuries |
| D．the operations she had |
Kahlo’s style had become increasingly independent since the________.
| A．1930s |
| B．1940s |
| C．1950s |
| D．1970s |
What is author’s attitude toward Kahlo?
| A．Devotion |
| B．Sympathy |
| C．Worry |
| D．Encouragement |
The Basics of Math—Made Clear
Basic Math introduces students to the basic concepts of mathematics, as well as the fundamentals of more tricky areas. These 30 fantastic lectures are designed to provide students with an understanding of arithmetic and to prepare them for Algebra(代数) and beyond.
The lessons in Basic Math cover every basic aspect of arithmetic. They also look into exponents(指数), the order of operations, and square roots. In addition to learning how to perform various mathematical operations, students discover why these operations work, how a particular mathematical topic relates to other branches of mathematics, and how these operations can be used practically.
Basic Math starts from the relatively easier concepts and gradually moves on to the more troublesome ones, so as to allow for steady and sure understanding of the material by students. The lectures offer students the chance to “make sense” of mathematical knowledge that may have seemed so frightening. They also help students prepare for college mathematics and overcome their anxiety about this amazing—and completely understandable—field of study.
By the conclusion of the course, students will have improved their understanding of basic math. They will be able to clear away the mystery(神秘性) of mathematics and face their studies with more confidence than they ever imagined. In addition, they will strengthen their ability to accept new and exciting mathematical challenges.
Professor H. Siegel, honored by Kentucky Educational Television as “the best math teacher in America,” is a devoted teacher and has a gift for explaining mathematical concepts in ways that make them seem clear and obvious. From the basic concrete ideas to the more abstract problems, he is master in making math lectures learner-friendlier and less scary.
With a PhD in Mathematics Education from Georgia State University, Dr. Siegel teaches mathematics at Central Arizona College. His courses include various make-up classes and a number of lectures for future primary school teachers.
If the course fails to provide complete satisfaction to you, you can easily exchange it for any other course that we offer. Or you can get your money back. What does the course Basic Math mainly cover?
| A．Algebra. |
| B．College Mathematics. |
| C．Arithmetic. |
| D．Mathematics Education. |
What benefits can students expect from Basic Math?
| A．Stronger imaginative ability. |
| B．Additional presentation skills. |
| C．More mathematical confidence. |
| D．Greater chances of becoming teachers. |
What can we learn about Professor H. Siegel?
| A．He is a guest lecturer at Kentucky Educational Television. |
| B．He is to deliver 30 lectures in Basic Math. |
| C．He works in Georgia State University. |
| D．He specializes in training teachers. |
Where is the passage most likely to have been taken from?
| A．A news report. |
| B．A book review |
| C．A lesson plan. |
| D．An advertisement |
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