請依下文回答第 42 題至第 45 題
A polygraph is often called a “lie detector.” It is an instrument used to find out if a person is lying.
Polygraph tests are used in courts, in the government, and in some private businesses. 42 , polygraph
tests are controversial. Many people do not believe they can accurately identify whether a person is lying.
They think such tests are not 43 . They measure changes in the body associated with stress, but these
changes could be caused by other kinds of 44 . Some people feel no stress at all when lying. Honest
people may feel greatly stressed by the test itself. Because of this, the examiner may wrongly deduce that the
subject is lying. The subject might then be 45 unfairly. Even companies that make polygraphs state that
the machines cannot detect lies. They say that polygraphs can only identify behavior that should not be
trusted.
【題組】42 (A) Consequently (B) However (C) Instead (D) Moreover