50. 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.

51. 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

52. 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

D

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 race with the peanut butter and sandwiches. Not for his stupid weather report, for his smile.

Several months ago I was racing to catch a bus. As I breathlessly put my handful of cash across the Greyhound counter, the sales agent said with a broad smile, “Oh that bus left rive minutes ago.” Dreams of head-cutting!

It’s not the news that makes someone angry. It’s the unsympathetic attitude with which it’s delivered. Everyone must give bad mews from time to time, and winning professionals do it with the proper attitude. A doctor advising a patient that she needs an operation dose 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 ye? When yohad your heart set on the toast beef, has your waiter merrily told yothat he just served the last piece? It makes yoas 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 warning. 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 .

53. In Paragraph 1, the writer tells the story of the pharaoh to .

A. make a comparison B. introduce a topic C. describe a scene D. offer an argument

54. In the writer’s opinion, his neighbor was _____________.

A. friendly B. warm-hearted C. not considerate D. not helpful

55. From “Dreams of head-cutting!”(Paragraph 3), we learn that the writer .

A. was mad at the sales agent.

B. was reminded of the cruel pharaoh

C. wished that the sales agent would have had dreams.

D. dreamed of cutting the sales agent’s head that night.

56. What is the main idea of the text?

A. Delivering bad news properly is important in communication.

B. Helping others sincerely is the key to business success.

C. Receiving bad news requires great courage.

D. Learning ancient traditions can be useful.

E

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 photo 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 scholar doubt that Franklin was not only robbed of her life by disease but robbed of credit by her competitions.

At Cambridge University in the 1950s, Watson and Crick 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 reflecting the shape.