单项选择题

In the author's opinion, ______.

A．physiological changes will for sure betray a liar
B．the bigger a lie is, the stronger the strain will be
C．the degree of the strain depends on the purpose of lying
D．a well-trained person can tell lies without being detected

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热门试题

单项选择题

The message the author transmits to us is that ______.

A．a lie detector can make a good record of nerve impulses
B．a liar benefits himself from lying, but only at the cost of others
C．it is vital for us to be truthful to each other
D．lying will be checked by more advanced lie detectors

单项选择题

The author implies that ______.

A．the teacher should guide all discussions by revealing her own attitude
B．children's attitudes often come from those of other children
C．in some aspects of social studies a greater variety of methods can be used in the upper grades than in the lower grades
D．schools should offer the student opportunities for travel so that he can come into contact with people he would not otherwise meet