| At ________ good news, she felt confused for ________ moment, and then began to burst into laughter. |
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| A. the; the B. the; a C. a; the D. a; a |
| Many years later, the father returned form the army and found that his daughter was no longer ________ she used to be. |
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| A. what B. how C. when D. whom |
| The two birds ________ each other in shape and color, in other words, they ________ each other in shape and color. |
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A. differ; are different from B. differ from; are different with C. resemble; are similar to D. resemble; are similar with |
| With a chicken ________ on the fire, I can't leave even for a minute. |
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| A. toasting B. toasted C. to be toasted D. being toasted |
| I can't tolerate being made fun of, ________ never to come again. |
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| A. determined B. being determined C. determine D. to determine |
| The shepherd had to round up the sheep ________ first night fell. |
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| A. until B. before C. after D. till |
| My daughter did very well in the midterm exam, ________ first on the list of all the students. |
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| A. getting B. ranking C. to rank D. to get |
| ________ on the small island, the tower has been seriously damaged by the seawater. |
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| A. Being lain B. Lain C. Being located D. Located |
| Every painting she ______ to her country, which was her will. |
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| A. had been contributed B. had to be contributed C. had contribute D. had was contributed |
| Hundreds of small islands spread out on the vast sea ________ the famous coast. |
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| A. on B. over C. around D. off |
| Canada has almost ________ as China, but it doesn't have ________ as that of China. |
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| A. the same size; so a large population B. the same size; so large a population C. as; as a large population D. so large; as large population |
| Today in Australia, there are thousands of creatures, ________ are endangered by human beings. |
| A. many of them B. most whom C. the majority of which D. whose many |
| Nowadays many young girls are losing weight, so they eat ________ food. |
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| A. a few B. a little of C. a bit D. a bit of |
| Don't forget to bring the box to Lily, ________? |
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| A. are you B. will you C. do you D. shall we |
| Jack likes swimming, but he doesn't enjoy skating.________. |
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| A. So do I B. It is so with me C. Neither do I D. So it is with me |
| 阅读理解 |
| Six astronauts are about to experience what it's like to travel to Mars and back, only without actually leaving Earth.Three Russian astronauts will join three colleagues from other countries as they are locked up together for a year and a half on a simulated(模仿的) mission to Mars.The mission is called Mars 500. The Mars500 mission at Moscow's Institute of Biomedical Problems will test the psychological and physical effects of longterm isolation on humans. The group's leader, engineer Sytev, looks at the threesquaremeter place that will be his personal habitation."This phone will work for only 11 days.When we are near the Earth, it will be switched off, " said Sytev.Sytev is a newlywed.He says the most difficult thing will be to be separated from his wife and the persons around him.He finds it difficult to leave some of his habits behind-all their activities will be directed towards a certain goal and that he won't see sunsets, sunrises, won't feel rain for 18 months. After 250 days, three of the astronauts will simulate landing on Mars.The other three will wait for them-in the mock spacecraft-for a month.All communication with Earth will be via email and will have as much as a 40minute delay, like on a real Mars mission. Suvorov is a physician.He and other scientists will monitor the astronauts."This experiment is unique because the six persons will be isolated for a long period of time, " noted Suvorov."They will have to make decisions on their own and only then report to the Earth, and the Earth will tell them whether they did the right thing or not."He says the experiment will pave the way for a real Mars journey later this century."We are going to determine how much food and other products of daily use are needed, and how people of different cultures, of different training can find common language and work on performing their tasks, " added Suvorov. Mars500 is the third in a series of flight simulations.The earlier ones were shorter.The current experiment is set to end in November 2011. 1. The underlined word "mock" in Paragraph 4 means ________. A. simulated B. advanced C. small D. comfortable 2. What do we learn about the Mars500 mission according to the text? A. The base is located in New York, America. B. It is a simulation program designed for the future space expedition. C. All astronauts will spend 18 months in the spacecraft. D. Astronauts can't use any mobile phone during the experiment. 3. What is the most difficult thing that Sytev will face during their training? A. Standing the isolation and loneliness. B. There existing a 40minute delay. C. Lacking food and other products. D. Being monitored by Suvorov and other scientists. 4. We can learn from Suvorov's words that ________. A. it's hard for the astronauts to perform their tasks together B. more experiments will be carried out for a real journey C. the astronauts should learn to make decisions on their own D. different cultures of the astronauts don't matter any more |
| 阅读理解 |
| Today we tell you about some new understanding of why cutting the main branch of a plant or tree can lead to better development. The findings are from researchers on two_continents.Professor Prezemyslaw Prusinkiewicz of the University of Calgary in Canada led the research with scientists from Britain and Sweden.Their study appears in the Proceedings of the National Academy of Sciences. Researchers have known since the 1930s that the actively growing tip of a plant produces a hormone(荷尔蒙) called auxin(生长素). This hormone flows down the main stem.Scientists say the auxin has an indirect effect on buds(芽) on the side of the stem to prevent branching. These buds themselves also produce auxin.The research suggests that to grow, they have to be able to export the hormone into the main stem.But the flow from the stem tip prevents them from doing this. The researchers wanted to find out how this blocking happens. Professor Prusinkiewicz is on leave in Australia, but he sent us an email suggesting a simple way to underst and the process.Think of a major road crowded with traffic.So many cars are on the main road that the cars on the side roads cannot enter. The stem is like the crowded main road.The new research shows that the buds on the side cannot export their auxin into the main stem because it is too full.But if that main shoot is pruned(修剪), other buds below it can start exporting.They are no longer prevented from growing. Ottoline Leyser from the University of York says that after a plant is pruned, all the inhibited(被抑制的) shoot tips compete with each other to grow.In doing this, the branches influence each other's growth. Nearby shoot tips are more likely to affect each other than those that are far apart from each other. Professor Leyser says the strongest branches grow best, wherever they may be on the plant.The study found that the main shoot grows the best of all not because of its position at the top of the plant, but mostly because it got there first. 1. The underlined part "two continents" in Paragraph 2 refers to "________". A. Asia and Africa B. Africa and Europe C. North America and Europe D. Australia and Europe 2. Professor Prusinkiewicz compares the cars on the side roads to ________. A. plant stems B. plant buds C. the leaves of a plant D. the roots of a plant 3. To make the buds on the side of the stem to grow better, the main shoot should ________. A. be cut off B. be protected C. be watered as much as possible D. be given much auxin 4. According to the passage, which of the following is TRUE? A. Researchers have recently found out that the growing tip of a plant produces hormones. B. Auxin has a direct effect on buds to keep branches from growing. C. Buds on the side of the stem can't produce hormones. D. In order to grow, the buds on the side of the stem export the hormones into the main stem. |