[单项选择]

Cellular Phone Options
Phone	Optional Services
SPS-1	Discounted rates for Sweetspeak club members Free text messaging Online access to computer network
SPS-2	Discounted rates for Sweetspeak club members Free text messaging Online access to computer network International roaming service
Laser T-450	Discounted rates for Sweetspeak club members Free text messaging Case and colored covers included
Softspeak 400	Discounted rates for Sweetspeak club members Headset included
Galactica	Discounted rates for Sweetspeak club members Intern A. Cellular phones B. Radios C. Large screen TVs D. Internet service 查看答案 更多"Cellular Phone Options Phone Opti"的相关试题: [单项选择] Cellular Phone Options Phone Optional Services SPS-1 Discounted rates for Sweetspeak club members Free text messaging Online access to computer network SPS-2 Discounted rates for Sweetspeak club members Free text messaging Online access to computer network International roaming service Laser T-450 Discounted rates for Sweetspeak club members Free text messaging Case and colored covers included Softspeak 400 Discounted rates for Sweetspeak club members Headset included Galactica Discounted rates for Sweetspeak club members Intern A. Free text messaging B. Large screen C. Discounted rates for members D. International roaming service 查看答案 [单项选择]Using a cellular phone does not increase a person’s risk of cancer, according to a broad study released on Tuesday involving more than 400,000 Danish cellular telephone users. A team of researchers used data on the entire population of Denmark to determine that neither short-term nor long-term use of cellular phones, also called mobile phones, was linked to a greater risk of tumors of the brain and nervous system, salivary gland (唾腺) or eyes, leukemia(白血病) or cancer overall. "I think the results of this study are quite reassuring," Joachim Schuz of the Danish Institute of Cancer Epidemiology in Copenhagen, the lead researcher, said in an interview by cellular phone from Denmark. The study, one of the most comprehensive to date, represented the latest evidence endorsing the safety of cell phones. The data available to the researchers allowed them to look at a large number of cell phone users and assess potential risks many years after they first used them. Th A. Cell phone use should be prohibited. B. Cell phones don’t raise cancer risk. C. Cell phones are popular among youths. D. Cell phones may be dangerous. 查看答案 [简答题]Web services 查看答案 [简答题]A. Options get rid of any risk. B. Options make price increasing possible. C. Options can realize maximum profits and minimum loss. D. Options can stop price decreasing. 查看答案 [多项选择]Talking about transportation options 查看答案 [单项选择]President Bush has proposed adding optional personal accounts as one of the central elements of a major Social Security reform proposal. Although many details remain to be worked out, the proposal would allow individuals who choose to do so to divert part of the money they currently pay in Social Security taxes into individual investment accounts. Individuals would have a choice of fund managers, and the return that they earn from those accounts would then partially determine the Social Security benefit they receive when they retire. Individual accounts pose a number of important and complex design and implementation issues, including how to lower the cost of administering accounts so that they do not erode the value of pensions that individuals receive when they retire, how many and what kinds of fund choices should be offered, and how to engage workers in choosing funds. In the late 1990s, Sweden added a mandatory individual accounts tier to its public pension system. This A. People can transfer some money from their investment accounts to the Social Security taxes B. The return people earn from their accounts can decide their social benefit decisively C. People can spent more on investment and meanwhile receive more benefit in the future D. These accounts will determine how much people can receive in their lives 查看答案 [单项选择] Cell Phone Lets Your Secret Out Your cell phone holds secrets about you. Besides the names and (51) that you’ve programmed into it, traces of your DNA linger (逗留) on the device, according to a new study. DNA is genetic material that (52) in every cell. Like your fingerprint, your DNA is unique to you (53) you have an identical twin. Scientists today routinely analyze DNA in blood, saliva (唾液), or hair left (54) at the scene of a crime. The results often help detectives identify (55) and their victims. Your cell phone can reveal more about you (56) you might think. Meghan J. McFadden, a scientist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the (57) . This made her wonder whether traces of DNA lingered on cell phones even when no blood was involved. 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