大学英语第三册课件unt 3 security on the latch大学英语第三册课件uni.ppt

Unit 3 Security on the latch (of a door) closed but not locked Let yourself in; the door is on the latch. Don’t forget to leave the front door on the latch if you go to bed before I come back. On the noun: (rise, increase, decline, decrease) Close up Shut (sth.) esp. temporarily I wanted so much to close up my store and go traveling. On the New Year’s Eve all the stores were closed up in my hometown. Rural Of, in or suggesting the countryside In rural areas the distance between buildings makes infrastructure development costly. By the year 2010 urban residents will outnumber rural residents in most developing countries. Vulnerable Exposed to danger or attack; unprotected Intruders are developing techniques to harness the power of hundreds of thousands of vulnerable systems on the Internet. Compared with Saudi Arabian soccer team, the Chinese team is more vulnerable. Be vulnerable to sth. Urban Of; situated in or living in a city or town Motor vehicle emissions, to a large extent, are responsible for urban air pollution. We would adopt drastic measures to cut back not only on carbon dioxide but acid rain and urban smog as well. Statistics Collection of information expressed in numbers The US Immigration and Naturalization Service said government statistics on foreign workers were incomplete. The statistics indicate that roughly every 22 years a major drought occurs in the United States. Tranquil Calm, quiet and undisturbed The hospice aims to bring peace and comfort to the dying by offering expert care and a tranquil atmosphere. Visitors like to stay in this hotel because it is beautiful and located in a tranquil lake area. Era A period of history or a long period of time The dinosaurs died out about 66 million years ago, at the end of the Mesozoic Era. Young students should study hard to ensure the country’s fast economic and social development in the era of globalization. Electronic Of or relating to electronics or devices and systems developed