New Technique Promises Earlier Cancer Detection
A new technique could revolutionize the early detection of cancer, giving sufferers a greater chance of beating the disease, American scientists said. Researchers at the Massachusetts Institute of Technology have devised a novel method of________ changes in the nucleus of cells in the earliest stages of the disease. More than 85 percent of all cancers originate in the epithelium that lines the internal surfaces of organs________ the body. Although these are treatable________ they are diagnosed in one of the preventable stages, early body damages are almost ________ to detect, said scientist Feld. We present a new optical-probe technique based on light-scattering spectroscopy that is able________ detect pre-cancerous and early cancerous cells in cell-rich epithelia, he added in a statement.
The new technique relies on the fact ________ cell nuclei change in the early stages of cancer and the differences scatter light in a characteristic way. Until now the changes were only detectable________ a biopsy was taken, the scientists said. The new technique, ________ in the science journal Nature, can be used in conjunction with a routine cancer screening and surveillance technique which uses an endoscope -a flexible optical probe ________ with cameras which is inserted into a cavity in the body-to check ________ cancers.
The scientists said they________ their new technique in four different organs during routine endoscopic cancer screening. The tip of the optical probe was brought into contact with the tissue to be tested and the scattering of light was recorded without the need for any tissue to be________, the scientists said. Our results show that light-scattering spectroscopy has the potential to detect pre-cancerous body damages and pre-invasive cancers throughout the body. This technique should ________ reprove the efficiency of cancer screening and surveillance, the scientists said. Cancer s one of the biggest ________ in industrialized countries. ________ to figures from the World Health Organization, 10 million people were diagnosed with the disease worldwide in 1997 and six million died.
1 A stopping B accelerating C detecting D delaying
2 A with B throughout C without D for
3 A if B unless C whether D whereas
4 A capable B impossible C possible D responsible
5 A for Bat C of D to
6 A when B how C that D why
7 A after B before C although D near
8 A determined B directed C planned D described
9 A contracted B equipped C issued D coping
10 A against B with C for D like
11 A had tested B had to test C have tested D have been testing
12 A covered B removed C found D pressed
13 A severely B doubtfully C hardly D significantly
14 A sufferers B gainers C killers D losers
15 A According B As C Running D Responding
【参考答案】
1. C 2. B 3. A 4. B 5. D
6. C 7. A 8. D 9. B 10. C
11. A 12. B 13. D 14. C 15. A
北京小升初英语试卷:模拟冲刺试题及答案(3)
小升初英语必考考点:动词do及have/has用法口诀用法口诀
北京小升初英语试卷:模拟冲刺试题及答案(2)
小升初模拟题及答案
北京小升初英语试卷:突击训练题及答案(3)
小升初英语必考考点汇总
小升初模拟题
小升初英语练习题及答案解析(十二):单项选择、单词拼写
2015小升初模拟试题及答案
北京小升初英语试卷汇总
小升初模拟题及答案
小升初英语试卷:时态练习题汇总
小升初英语练习题及答案解析(三):语法精炼、阅读理解
小升初英语练习题及答案解析(五):单项填空、完型填空
北京小升初英语试卷:突击训练题及答案(2)
小升初英语练习题及答案解析(二):填空、阅读理解
小升初英语冲刺模拟试题及答案(一)
小升初模拟题及答案
小升初英语练习题及答案解析(一):语法巩固、完型精炼
小升初英语模拟题及答案(人教版)
2012年北京小升初英语考试真题及答案
北京小升初英语试卷:模拟冲刺试题及答案(1)
小升初英语练习题及答案解析(八):完成句子、阅读理解
小升初英语必考考点:There be句型用法口诀
北京小升初英语试卷:突击训练题及答案(1)
小升初英语必考考点:小学PEP英语句型(1-20)
小升初模拟题及答案
小升初英语必考考点:小学PEP英语句型(21-40)
小升初英语练习题及答案解析(十三):单项选择、阅读理解
备考指导:小升初考试前注意事项
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |