According to Allen, why did the people do better with pets around when l~cing stressful tasks?
A．They have lower blood pressure.
B．They become more patient.
C．They are less nervous.
D．They are in higher spirits.
Theunderlinedsentenceinthelastparagraphprobablymeansthat______.
A.theproblemisnotapproachedstepbystep
B.theresearchessofarhavefaultsinthemselves
C.theproblemistoodifficultforresearcherstodetect
D.researchinthisareaisnotenoughtomakegeneralizedpatterns
27 Mrs.White showed her students some old maps from the library．
A to borrow
B to be borrowed
C borrowed
D borrowing
Some people eat with their eyes. They prefer to order what _____ nice.
A. looks
B. smells
C. feels
D. tastes
According to Paragraph 2, why may a person suddenly forget who has called?
A. He may leave his prefrontal cortex temporarily damaged.
B. He is probably interrupted by another task.
C. He is probably not very familiar with the person he has called.
D. He may need a rest between dialing and speaking.
27_________
A. sick
B. nervous
C. angry
D. afraid