大学英语授课讲解

What are the damages of cell phone radiation to our body? damage DNA, break down the brain's defense while increasing memory loss, the risk of Alzheimer's disease, and cancer.
F
)Those who used stimulus-response methods had increased activity.
Cell Phone Radiation May Damage DNA
The debate about cell phones causing brain cancer and damaging DNA has been an ongoing issue and it's quite difficult to know where to stand. On the one hand, you have a four-country study which took place in Denmark, Finland, Norway and Sweden, which found no increase in brain tumor diagnoses from 1998 to 2003. But then new research presented by Devra Davi the founding director of the Toxicology and Environmental Studies board at the U.S. National Academy of Science claims the most popular gadget ['ɡædʒit] of our time has been shown to damage DNA, ɡ break down the brain's defense while increasing memory loss, the risk of Alzheimer's disease, and cancer. Davis warns that the growing brains of children make them especially vulnerable['vʌlnərəbl] . ʌ
Bring about
SYN: cause
Bring sth about：to make sth happen ： eg：what brought about the change in his attitude？ ： ？
SYN: keen
Avid [`ævid]
adj.
a. very enthusiastic about sth (often a hobby) An avid reader/collector 酷爱阅读和收藏的人 She has taken an avid interest in the project. 她对这个项目入了迷。 她对这个项目入了迷。 b. (~ for sth) wanting to get sth very much He was avid for more information. 他渴望知道更多信息。 他渴望知道更多信息。
What is the function of the hippocampus in our brain? Memory and navigation. ( F )hippocampus is one of the first areas of the brain to be affected by GPS. ( F )Only old people will be effected by Alzheimer’s disease. ( F )Avid GPS Use cannot influence hippocampus function. (
wipe out: to destroy or remove sb/sth completely eg.: whole villages were wiped out by the earthquake. 地震把整座整座的村庄夷为平地。 地震把整座整座的村庄夷为平地。 last year’s profits were virtually wiped out. 去年的利润几乎全都赔光了。 去年的利润几乎全都赔光了。
(F) It has not been paid attention to Cell phone causing brain cancer and damaging DNA. (T) the growing brains of children are especially vulnerable. (F) long-term cell phone use is almost unanimously agreed to be quite harmless
spatial navigation 空间导航法 stimulus-response 刺激反应法
Functional magnetic resonance imaging (fMRI) scans were taken of older adults who were GPS and non-GPS users. Those who used spatial navigation strategies had increased activity and a greater volume of grey matter in the hippocampus than those who relied on GPS. The study indicated that those who used GPS-like stimulus-response could be at risk for showing atrophy of the hippocampus over time.
Functional magnetic resonance imaging 功能性核磁共振 grey matter 脑部和脊椎的灰色神经组织
Notably, an earlier study conducted by researchers at the University of London showed that London taxi drivers who spent three years learning their way around London by spatial methods rather than GPS had a region of the hippocampus that was significantly larger compared to the general population and even bus drivers.
Avid GPS use can wipe out your memory wk.baidu.comanks
GPS（Global Position System） （ ） 全球定位系统
Neurological researcher Veronique Bohbot and her colleagues at Montreal’s McGill University released three studies on the effect GPS has on the human brain. Their results suggest that avid GPS use may reduce hippocampus function as we age. The hippocampus is the part of the brain involved in memory and navigation processes and is also one of the first areas of the brain to be affected by Alzheimer’s disease.
Bank
n. a. an organization that provides various financial services, for example keeping or lending money 银行 b. an amount of sth that is collected ; a place where sth is stored ready for use 库存；库 库存； A bank of knowledge 知识宝库 c. the side of a river and the land near it 岸；河畔 He jumped in and swam to the opposite bank. 他跳下水，游到对岸。 他跳下水，游到对岸。 v. a. to put money into a bank account 把（钱）存入银行 b. (~with/at…) to have an account with a particular bank 在某银行)开账户 开账户， （在某银行 开账户，存款 The family had banked with Coutts for generations. 那家几代人都在库茨银行存钱。 那家几代人都在库茨银行存钱。 c. ~ sth (up) to form sth into piles 堆积（某物） 堆积（某物） They banked the earth (up) into a mound. 他们把土堆成一个山丘。 他们把土堆成一个山丘。
Tech is good, tech is great, but will your brain deteriorate?
Technology has brought about many improvements to society and even shown us that the brain can continue to grow and learn as we get older. But here are some of the most widely used technologies and the possible damages they can do to your biological supercomputer.
There are two major ways of navigating: spatial navigation (using visual landmarks to tell us where we are) or by stimulus-response methods (turning at certain places because of repetition, as though on auto-pilot). The latter is most familiar to those using GPS.
While I'm not sure I am going to completely jump on board with this theory, I do think it's better to be safe than sorry. Although shortterm exposure is almost unanimously agreed to be quite harmless, long-term cell phone use tells a different story. Three studies since 1999 indicate that people who have used cell phones for more than a decade may have as much as three times greater risk of developing brain tumors on the side of the head which they most often hold their phone.