We’re trying to decide where to go on our vacation this summer. We usually go to the Lake Arrowhead for a few weeks, but we’d like to go somewhere else this year. We’re tired of doing the same thing summer after summer. Some friends of ours suggested that we go to Hawaii. That would be wonderful! I’m sure we’d enjoy a trip like that, but of course it’s out of the question. In the first place, it would be rather expensive, and in the second place, there wouldn’t be enough time. If we’re lucky enough to save some money between now and next summer, and if I’m lucky enough to get four weeks of vacation instead of two weeks, maybe we can go to Hawaii next year. As a matter of fact, if we wanted to plan a trip like that, it might be advisable to stay home this summer and not go any place. That’s one way we could begin to save some money for next year’s trip. Also, if we were to stay here, I could offer to work instead of taking two weeks off; then maybe my boss would suggest that I be given four weeks’ vacation next summer instead of two weeks.The author to spend their vacation this year.
| A．is going to Hawaii |
| B．will go to Lake Arrowhead |
| C．has decided to go nowhere |
| D．hasn’t decided where to go |
The sentence “it’s out of the question” means “ ”.
| A．it is possible | B．it is a question |
| C．it is impossible | D．it is not a question |
If the author wanted to make a trip to Hawaii, he might this year.
| A．save some money |
| B．stay at home |
| C．work rather than take two weeks off |
| D．all the above |
A trip to Hawaii that to Lake Arrowhead.
| A．costs much more than | B．costs as much as |
| C．takes less time than | D．takes as much time as |
Many animals recognize their food because they see it. So do humans. When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other senses when you choose your food. You may like it because it smells good or because it tastes good. You may dislike some types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.
Although there are many different types of food, some animals spend their lives eating only one type. The giant panda（大熊猫）eats only one particular type of bamboo（竹子）. Other animals eat only one type of food even when given the choice. A kind of white butterfly（蝴蝶）will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet（多样化饮食）. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.
Humans have a very varied diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modern life. We can infer from the text that humans and animals _________.
| A．depend on one sense in choosing food | B． are not satisfied with their food |
| C．choose food in similar ways | D．eat entirely different food |
Which of the following eats only one type of food?
| A．The white butterfly. | B．The small bird. |
| C．The bear. | D．The fox. |
Certain animals change their choice of food when ___________.
| A．the season changes | B．the food color changes |
| C．they move to different places | D．they are attracted by different smells |
We can learn from the last paragraph that __________.
| A．food is chosen for a good reason | B．French and British food is good |
| C．some people have few choices of food | D．some people care little about healthy diet |
Governments and health officials around the world continued to take steps Tuesday against the outbreak of swine flu that has killed scores of people in Mexico and spread to the U.S., Europe and possibly Asia.
By early Tuesday, the swine flu outbreak in Mexico had caused in 152 deaths and more than 1,600 illnesses. So far, at least 113 cases have been proved worldwide, including 64 in the United States; six in Canada; 11 in New Zealand and two each in Spain the United Kingdom and Israel. None has yet resulted in death.
The World Health Organization on Monday raised its alert level from three to four on its six-level scale. The move means the U.N. agency has determined that the virus can transmit from human to human.
"In this age of global travel, where people move around in airplanes so quickly, there is no region to which this virus could not spread," said Fukuda, assistant director-general of the WHO.
Governments around the world struggled to prevent further outbreak. Some, like China and Russia, banned pork imports from the United States and Mexico. U.S. President Barack Obama said the outbreak was a cause for concern, not for alarm. The government urged travelers to avoid non-essential travel to Mexico.
The latest WHO report listed only seven proved swine flu deaths in Mexico but it was not clear why there was the discrepency.
Mexico City has closed all schools until at least May 6 to help curb(control) the spread of swine flu and ordered 35,00 public venues to close or serve only takeaway meals. In addition, bars, clubs, movie theaters, pool halls, gyms, sport centers and convention halls have been told to close until May 5. Armed police officers are also guarding hospitals in Mexico City while roads and schools in the city of 20 million people are deserted. Officials also have talked about shutting down the bus and subway systems.
57.How many people were found catching swine flu in Spain?
A. 2. B. 11. C. 6. D. 64.
58.When learning the outbreak of swine flu, the WHO was ____.
A. calm B. nervous C. shocked D. careful
59. Fukuda’s words suggest that _____.
A. he likes travel by air
B. global travel hasn’t been affected
C.this virus can spread quickly because of global travel
D. planes must be forbidden to take to prevent swine flu
60.The last paragraph mainly tells us _____.
A. Mexico has taken measures to control swine flu
B. Mexico City is too dangerous to live in
C. the normal life in Mexico has been changed
D. people in Mexico are badly in need of help
Four people in England back in 1953, stared at Photo 51,It wasn’t much—a picture showing a black X. But three of these people won the Nobel Prize for figuring out what the photo really showed –the shape of DNA The discovery brought fame and fortune to scientists James Watson, Francis Crick, and Maurice Wilkins. The fourth, the one who actually made the picture, was left out.
Her name was Rosalind Franklin.”She should have been up there,” says historian Mary Bowden.” If her photos hadn’t been there, the others couldn’t have come up with the structure.” One reason Franklin was missing was that she had died of cancer four years before the Nobel decision. But now scholars doubt that Franklin was not only robbed of her life by disease but robbed of credit by her competitors
At Cambridge University in the 1950s, Watson and Click tried to make models by cutting up shapes of DNA’s parts and then putting them together. In the meantime, at King’s College in London, Franklin and Wilkins shone X-rays at the molecule(分子). The rays produced patterns reflection the shape.
But Wilkins and Franklin’s relationship was a lot rockier than the celebrated teamwork of Watson and Crick, Wilkins thought Franklin was hired to be his assistant .But the college actually employed her to take over the DNA project.
What she did was produce X-ray pictures that told Watson and Crick that one of their early models was inside out. And she was not shy about saying so. That angered Watson, who attacked her in return, “Mere inspection suggested that she would not easily bend. Clearly she had to to go or be put in her place.”
As Franklin’s competitors, Wilkins, Watson and Crick had much to gain by cutting her out of the little group of researchers, says historian Pnina Abir-Am. In 1962 at the Nobel Prize awarding ceremony, Wilkins thanked 13 colleagues by name before he mentioned Franklin, Watson wrote his book laughing at her. Crick wrote in 1974 that “Franklin was only two steps away from the solution.”
No, Franklin was the solution. “She contributed more than any other player to solving the structure of DNA . She must be considered a co-discoverer,” Abir-Am says. This was backed up by Aaron Klug, who worked with Franklin and later won a Nobel Prize himself. Once described as the “Dark Lady of DNA”, Franklin is finally coming into the light.What is the text mainly about?
A. The disagreements among DNA researchers.
B. The unfair treatment of Franklin.
C. The process of discovering DNA.
D. The race between two teams of scientists.Watson was angry with Franklin because she .
| A．took the lead in the competition | B．kept her results from him |
| C．proved some of his findings wrong | D．shared her data with other scientists |
Why is Franklin described as “Dark Lady of DNA”?
A. She developed pictures in dark labs.
B. She discovered the black X-the shape of DNA.
C. Her name was forgotten after her death.
D. Her contribution was unknown to the public.What is the writer’s attitude toward Wilkins, Watson and Crick?
| A．Disapproving. | B．Respectful. | C． Admiring. | D．Doubtful. |
In ancient Egypt, the pharaoh(法老)treated the poor message runner like a prince when he arrived at the palace, if he brought good news. However, if the exhausted runner had the misfortune to bring the pharaoh unhappy news, his head was cut off.
Shades of that spirit spread over today's conversations. Once a friend and I packed up some peanut butter and sandwiches for an outing. As we walked light-heartedly out the door, picnic basket in hand, a smiling neighbor looked up at the sky and said, "Oh boy, bad day for a picnic. The weatherman says it's going to rain."I wanted to strike him on the face with the peanut butter and sandwiches. Not for his stupid weather report, for his while
Several months ago I was racing to catch a him As I breathlessly put my handful of cash across the Grey hound counter, the sales agent said with a broad smile ,"Oh that bus left five minutes ago."Dreams of head-cutting!
It's not the news that makes someone angry. It's the unsympathetic attitude with which it's the unsympathetic attitude with which it's delivered. Everyone must give bad news from time to time, and winning professionals do it with the proper attitude. A doctor advising a patient that she needs an operation does it in a caring way. A boss informing an employee he didn't get the job takes on a sympathetic tone. Big winners know, when delivering any bad news, they should share the feeling of the receiver.
Unfortunately, many people are not aware of this. When you're tired from a long flight, has a hotel clerk cheerfully said that your room isn't ready yet? When you had your heart set on the toast beef, has your waiter mainly told you that he just served the last piece? It makes you as traveler or diner want to land your fist right on their unsympathetic faces.
Had my neighbor told me of the upcoming rainstorm with sympathy, I would have appreciated his warming .Had the Greyhound salesclerk sympathetically informed me that my bus had already left, I probably would have said, " Oh, that's all right I'll catch the next one." Big winners, when they bear bad news ,deliver bombs with the emotion the bombarded(被轰炸的)person is sure to have.
| 1． |
In Paragraph 1,the writer tells the story of the pharaoh to.
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| 2． |
In the writer's opinion, his neighbor was.
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| 3． |
From "Dreams of head-cutting!"(Paragraph3),we learn that the writer.
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| 4． |
What is the main idea of the text?
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Plants can’t communicate by moving or making sounds, as most animals do. Instead, plants Produce volatile compounds, chemicals that easily change from a liquid to a gas. A flower’s sweet smell, for example, comes from volatile compounds that the plant produces to attract insects such as Bugs and bees.
Plants can also detect volatile compounds produced by other plants. A tree under attack by Hungry insets, for instance, may give off volatile compounds that let other trees know about the Attack. In response, the other trees may send off chemicals to keep the bugs away ——or even Chemicals that attract the bugs’ natural enemies.
Now scientists have created a quick way to understand what plants are saying: a chemical Sensor（传感器）called an electronic nose. The “e-nose” can tell compounds that crop plants make When they’re attacked Scientists say the e-nose could help quickly detect whether plants are being Eaten by insects. But today the only way to detect such insects is to visually inspect individual Plants. This is a challenging task for managers of greenhouses, enclosed gardens than can house Thousands of plants.
The research team worked with an e-nose than recognizes volatile compounds. Inside the device, 13 sensors chemically react with volatile compounds Based on these interactions, the e-nose gives off electronic signals that the scientists analyze using computer software.
To test the nose, the team presented it with healthy leaves from cucumber, pepper and tomato plants, all common greenhouse crops. Then scientists collected samples of air around damaged leaves from each type of crop, These plants had been damaged by insects, or by scientists who made holes in the leaves with a hole punch（打孔器）. The e-nose, it turns out, could identify healthy cucumber, pepper and tomato plants based on The volatile compounds they produce, It could also identify tomato leaves that had been damaged. But even more impressive, the device could tell which type of damage ---- by insects or with a hole Punch ---- had been done to the tomato leaves.
With some fine-tuning, a device like the e-nose could one day be used in greenhouses to quickly spot harmful bugs, the researchers say. A device like this could also be used to identify fruits that are perfectly ripe and ready to pick and eat, says Natalia Dudareva, a biochemist at Purdue University in West Lafayette, Ind. who studies smells of flowers and plants. Hopefully, scientists believe, the device could bring large benefits to greenhouse managers in the near future.We learn from the text that plants communicate with each other by____.
| A．making some sounds | B．waving their leaves |
| C．producing some chemicals | D．sending out electronic signals |
What did the scientists do to find out if the e-nose worked?
| A．They presented it with all common crops. |
| B．They fixed 13 sensors inside the device. |
| C．They collected different damaged leaves. |
| D．They made tests on damaged and healthy leaves. |
According to the writer, the most amazing thing about the e-nose is that it can___.
| A．pick out ripe fruits |
| B．spot the insects quickly |
| C．distinguish different damages to the leaves |
| D．recognize unhealthy tomato leaves |
We can infer from the last paragraph that the e-nose_____.
| A．is unable to tell the smell of flowers |
| B．is not yet used in greenhouses |
| C．is designed by scientists at Purdue |
| D．is helpful in killing harmful insects |