16.“I just can’t swallow that claim” illustrates the metaphor that ________.(      )

A. ideas are people                                               B. ideas are food

C. ideas are products                                            D. ideas are commodities

17. “Their marriage is on its last legs” illustrate the metaphor about ________.(      )

A. love is madness                                               B. love is a patient

C. love is magic                                                   D. love is a physical force

18. “A green Christmas” refers to ________.(      )

A. a Christmas with vigor and energy

B. a Christmas full of jealousy and envy

C. a Christmas without snow

D. a Christmas with fruit and vegetables

19. “A black mood” refers to ________.(      )

A. a person always in a good temper

B. a fit of depression, bad temper usually temporary, though perhaps recurring

C. a person always in a bad temper is due to fail

D. a dying person who has always a bad temper