My Space and other Web sites have unleashed a potent new phenomenon of social networking in cyberspace, (1) at the same time, a growing body of evidence is suggesting that traditional social (2) play a surprisingly powerful and under-recognized role in influencing how people behave.
The latest research comes from Dr. Nicholas A. Christakis, at the Harvard Medical School, and Dr. James H. Fowler, at the University of California at San Diego. The (3) reported last summer that obesity appeared to (4) from one person to another (5) social networks, almost like a virus or a fad. In a follow-up to that provocative research, the team has produced (6) findings about another major health (7) : smoking. In a study published last week in the New England Journal of Medicine, the team found that a person’s decision to (8) the habit is strongly affected by (9) other people in their social network quit—even people they do not know. And, surprisingly, entire networks of smokers appear to quit virtually (10)
For (11) of their studies, they (12) of detailed records kept between 1971 and 2003 about 5,124 people who participated in the landmark Framingham Heart Study. Because many of the subjects had ties to the Boston suburb of Framingham, Mass. , many of the participants were (13) somehow—through spouses, neighbors, friends, co-workers—enabling the researchers to study a network that (14) 12,067 people.
Taken together, these studies are (15) a growing recognition that many behaviors are (16) by social networks in (17) that have not been fully understood. And (18) may be possible, the researchers say, to harness the power of these networks for many (19) , such as encouraging safe sex, getting more people to exercise or even (20) crime.

A:filling B:blocking C:fueling D:contributing

In other word, （　） we were witnessing rapid population growth, that would not mean that the countryside were filling in with people.

A:now that B:even that C:just as D:even if

A:pushing B:pulling C:filling D:carrying

In addition to the routine of arranging for pickup and delivery. booking the shipment on flights, and filling out air waybill, the air freight agent is also involved in such problems as tracing loss or strayed shipment and dealing with claims on damaged shipment.( )

How to avoid vapour emission during filling of departure ballast (non SBT vessel)?

A:By simultaneous ballasting andcargo discharge B:By reducing the IG pressure C:By minimizing the amount ofdeparture ballast D:By closing all the openings

Charging is the filling of the engine cylinder with a supply of _____ for compression.

A:water B:fresh air C:fuel oil D:gas

Charging is the filling of the engine cylinder with a supply or charge of fresh air _____ compression.

A:to need B:ready for C:want to D:going to be

In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?

A:The safety valve escape piping should be disconnected from the valve body and a blankinserted B:The boiler vent valves should be opened C:All handhole/manhole covers should be tightened up as much as possible to precludeany leaks D:All of the above

To avoid excessive pressures in the fuel oil filling system during bunkering, you should _____.

A:close the tank filling valves quickly B:top off all tanks at the same time C:rill completely all tanks to less than 95 % full D:reduce the loading rate when topping off