41.   The technology exists to test for them, so, why not?

42.   The technology has existed for years.

43.   The technology exists now, said D. D. Weiser, a spokesman for the Alert System Association.

44.   The technology exists to do it, but the entire rate structure for local calls would have to be revised.

45.   The technology exists to allow investigators to determine the general location of a cell phone user.

46.   The technology exists to solve these problems.

47.   The technology exists.

48.   The technology does not exist to hold a national daily referendum on policy, such as whether to bomb Kosovo or ban handguns.

49.   The technology exists for broadcasting text messages to every phone that is turned on or sitting in a charger, Weiser said.

50.   The technology exists to make all these alternatives available in less than five years.

n. + exist >>共 1655
problem 4.39%
evidence 2.06%
possibility 1.59%
opportunity 1.28%
difference 1.17%
life 1.15%
condition 1.10%
technology 1.04%
system 0.84%
group 0.78%
technology + v. >>共 637
be 22.65%
make 5.60%
allow 4.34%
have 3.41%
help 2.79%
change 2.40%
become 2.27%
improve 2.19%
come 1.44%
enable 1.39%
exist 1.20%
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