Some myths are stories told since ancient times to explain the causes for natural happenings.The Greek myth that explains why there are changes of __1__ is about Demeter，the goddess of the harvest.She had a daughter，Persephone，whom she loved very much.Hades，god of the underworld，fell in love with Persephone，and he asked Zeus，the __2__ of the gods，to give Persephone to him as his __3__.Zeus did not want either to disappoint Hades or to upset Demeter，so he said he would not agree to the marriage，but neither would he __4__ it.Hades，therefore，decided to take the girl without __5__.When Persephone was picking flowers in the garden，he seized her and took her to the underworld.When Demeter __6__ what happened to Persephone，she became so __7__ that she caused all plants to __8__.People were in __9__ of starving.But Demeter was determined not to let crops grow __10__ her daughter，Persephone，was returned to her.__11__，still not wanting to disappoint Hades，decided upon a condition for Persephone's __12__.She could go back to her mother if she had not __13__ anything while she was in the underworld.Demeter __14__ it because she did not know that Persephone had eaten several pomegranate(石榴) seeds in the underworld.When Zeus __15__ this，he agreed that Persephone could spend part of the year with her __16__，but he added that since she had eaten the seeds，she must spend part of the year in the underworld.And so it __17__ that when Persephone is in the underworld，Demeter is sad and therefore __18__ not let the crops grow.That is __19__ we have winter when plants do not grow.When Persephone returns，Demeter is __20__，it is spring，and plants begin to grow again.
1．A.periods B．seasons
C．time D．age
2. A．winner B．ruler
C．advisor D．fighter
3. A．wife B．lover
C．partner D．daughter
4. A．forbid B．forgive
C．admit D．accept
5. A．arrangement B．warning
C．reason D．permission
6．A.let out B．worked out
C．thought out D．found out
7. A．excited B．tired
C．angry D．serious
8．A.grow fast B．start growing
C．stop growing D．grow slowly
9. A．danger B．hope
C．turn D．case
10. A．since B．until
C．after D．when
11．A.Persephone B．Zeus
C．Demeter D．Hades
12. A．return B．change
C．marriage D．journey
13. A．stolen B．found
C．eaten D．heard
14. A．understood B．refused
C．doubted D．accepted
15. A．discovered B．studied
C．forgot D．prepared
16. A．daughter B．mother
C．god D．ruler
17. A．works B．remains
C．happens D．starts
18．A.should B．can
C．dare D．will
19. A．where B．because
C．why D．how
20．A.nice B．friendly
C．fresh D．happy