A--answer phone
B--burglar alarm
C--date-stamp
D--electronic display material
E--headed paper
F--office information system
G--shorthand
H--annual report
I--registered delivery
J--office automation
K--time sheet
L--computer package
M--handbook
N--waste basket
O--card-index
P--blueprint
| 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 [简答题]儿子给父亲买轮椅 personal alarm
[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 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, 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. (58) she and colleague Margaret Wallace of the City Un A. card B. keys C. screen D. speaker 我来回答: 提交
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