【题目】Hightech glasses developed at Washington University School of Medicine in St. Louis may help surgeons visualize cancer cells, which glow blue when viewed through the eyewear. Cancer cells are notoriously difficult to see, even under highpowered magnification. The glasses are designed to make it easier for surgeons to distinguish cancer cells from healthy cells, helping to ensure that no tumor cells are left behind during surgery.

Were in the early stages of this technology, and more development and testing will be done, but were certainly encouraged by the potential benefits to patients, said breast surgeon Julie Margenthaler, MD, an associate professor of surgery at Washington University. “Imagine what it would mean if these glasses got rid of the need for followup surgery and the associated pain, inconvenience and anxiety.”

Current standard of care requires surgeons to remove the tumor and some neighboring tissue that may or may not include cancer cells. The samples are sent to a pathology(病理) lab and viewed under a microscope. If cancer cells are found in neighboring tissue, a second surgery is often recommended to remove additional tissue that is also checked for the presence of cancer.

The glasses could reduce the need for additional surgical procedures and following stress on patients, as well as time and expense.

Margenthaler said about 20 to 25 percent of breast cancer patients who have lumps removed require a second surgery because current technology doesn’t adequately show the extent of the disease during the first operation.“Our hope is that this new technology will reduce or ideally eliminate the need for a second surgery, she said.

In a study published in the Journal of Biomedical Optics, researchers noted that tumors as small as 1 mm in diameter (the thickness of about 10 sheets of paper) could be detected.

Ryan Fields, MD, a Washington University assistant professor of surgery and surgeon of Alvin J. Siteman Cancer Center, plans to wear the glasses later this month when he operates to remove a melanoma from a patient. He said he welcomes the new technology, which theoretically could be used to visualize any type or cancer.

A limitation of surgery is that its not always clear to the naked eye the distinction between normal tissue and cancerous tissue, Fields said.With the glasses developed by Samuel Achilefu, PhD, professor of Washington University, we can better identify the tissue that must be removed.”

【1】【改编】what is the ultimate goal of developing the new technology ?________.

A.to distinguish cancer cells from healthy ones

B.to encourage hope for life in cancer patients

C.to make sure no cancer cell is left behind

D.to cut down the risk of cancer surgery

【2】The underlined word eliminate in Paragraph 5 is closest in meaning to ________.

A.meet B.remove

C.feel D.resist

【3】【改编】From the whole passage,what can be inferred ?_____

A.The glasses are invented by Ryan Fields and Samuel Achilefu.

B.The glasses glow blue when finding tissues including cancer cells.

C.Tumors as small as 1 cm in diameter could be detected by the glasses.

D.Much remains to be done before the technology can be widely employed.

【4】Which of the following would be the best title for the passage?

A.Special glasses help surgeonssee cancer

B.A new technology has been used in surgery

C.Patients will benefit from a new technology

D.Cancer is no longer a threat to people

【题目】A beer bottle thrown from the stands landed near Usain Bolt in the moments before the 100-meter final Sunday night in London.

As Bolt and seven other competitors ducked into their starting crouches, a bottle sailed from the first row of the stands at Olympic Stadium.

It harmlessly bounced in the lane belonging to Yohan Blake and didn’t appear to cause a distraction(分心) to the runners, who started a moment later. The thrower’s lack of distance was a blessing. Had he gathered tips from the competitors of the hammer throw(链球) competition, which was taking place in the infield at the same time as the 100 final, the bottle could have hit one of the competitors. It ended up landing a few feet from Blake (lane5).

Edith Bosch, a female Dutch judoka who won a bronze medal earlier during the Olympics, claimed that the man who threw the bottle was sitting near her and that she “beat” him. Whether that’s true or the hyperbole (夸张的语句) of an aggravated athlete was unclear in the minutes after the incident. Pictures show a group of Dutch athletes sitting behind the starting area.

Police took the man into custody(监护). He will appear in court on Monday morning.

Neither Bolt nor Blake said they knew of the incident until they were informed by reporters. “I don’t know who would have done that,” Bolt said.

Gatlin was aware of it but implied it was only a slight distraction. “I didn’t know what it was,” he said, according to the BBC, “but when you’re in those blocks, the whole stadium is so quiet that you can hear a pin drop.”

1How many exact athletes are mentioned in the text?

A. Two B. Four C. Seven D. Eleven

2What is the text mainly about?

A. Usain Bolt along with seven other competitors

B. A female Dutch judoka sitting behind the starting area.

C. The lane belonging to Yohan Blake before 100 final.

D. A beer bottle thrown at Usain Bolt before 100 final.

3What’s the writer’s attitude towards the athletes for the 100-meter final?

A. Critical B. Doubtful

C. Disapproving D. Positive

【题目】Almost everyone feels sleepy sometimes during the daytime. Being sleepy may get in the way of your daily work,childcare,and even activities for fun. Here are some ways to improve nighttime sleep and avoid daytime sleepiness.

1.Get adequate nighttime sleep.

That may sound obvious,but many of us cut down an hour or two off our sleep time in the morning or at night to do other things. Most adults need seven to nine hours a night,and teenagers usually need a full nine hours. Block out eight or nine hours for sleep every night.

2.Keep distractions out of bed.

“Remember your bed is only for sleep,” says the scientist.“You shouldn’t read,watch TV,play video games,or use laptop computers in bed.” Don’t do your bills or have heated discussions in bed,either. They may leave you sleepless.

3.Form a good habit.

You should form a good habit of going to bed and getting up at the same time at night and in the morning,including on weekends.

4.Gradually move to an earlier bedtime.

Another way of getting into a consistent (始终如一的) schedule is to try going to bed 15 minutes earlier each night for four nights. Then stick with the last bedtime. Slowly getting used to your schedule like this usually works better than suddenly trying to go to sleep an hour earlier.

5.Set consistent,healthy mealtimes.

Regular mealtimes,not just regular sleep times,help regulate our circadian rhythms (生理节奏).Eat a healthy breakfast and lunch on time instead of grabbing a piece of cake and coffee in the morning or a late sandwich on the run. Try to finish eating meals two or three hours before bedtime.

6.Exercise.

Regular exercise offers many benefits for sleep. Exercise generally makes it easier to fall asleep and sleep more soundly.

【1】The writer wrote this passage to ________.

A.explain why sleeping well is important

B.tell us what usually keeps us awake at night

C.tell us the harm of being sleepy in the daytime

D.give us some tips on how to avoid daytime sleepiness

【2】What does the underlined word “adequate” in Point 1 mean?

A.Enough.

B.Special.

C.Better.

D.Long.

【3】According to the writer,if we want to change our habits and go to sleep an hour earlier,we should ________.

A.try going to sleep an hour earlier suddenly

B.try getting used to our new schedule slowly

C.try getting used to our new schedule with some help

D.try going to bed 10 minutes earlier each night for six nights

【4】From Point 5 we know if we want to sleep around 10 pm,we should have supper at least by ________.

A.6∶00 p.m.

B.7∶00 p.m.

C.8∶00 p.m.

D.9∶00 p.m.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网