-
![]()
第21 至25 題為題組
A polygraph machine, also knownasavlie detector," isacommon partofcriminalinvestigations. The
instrumentis used to measure _21 aperson's body reacts to questions. The theory underlying itis that
1ying is stressful, and that this stress can be measured and recorded on apolygraph machine.
When aperson takes apolygraph test, fourto six wires, called sensors, are _22 to different parts of
his body. The sensors pick up signals from the person's blood pressure, pulse, and perspiration.。 一23 the
Proeess of questioning, al the signals are recorded onasingle strip of moving paper. Onee the questions
are finished, the examiner analyzesthe results to determine ifthe persontested 24 truthful.
Well-trained examin
s can usually detect lying with a high degree of 一25 。 when they use a
polygraph. However, because different people behave differently when lying, a polygraph testis by no
means Perfect.
21. (A) what (B) when (chow (D)why
22. (A) adapted (B) attached (Orelated (Drestrieted
23. (A) Before (B) Among (c) Without (D) Throughout
24. (A) was being (B) would be (CO wastobe (D) would have been
25. (A) quantity (B) aceuracy (Opossibility (D)emergeney
