It _______________ a gooddayforswimming,isit?

It_______________agooddayforswimming,isit

1Whatistheauthor’spurposeinwritingthisarticle?Isit toinformortopersuadeorboth? 2Howdoestheauthorshowustheimportanceofdeep-sea explorationinPartThree(Paras.6-9)? 3Whatroledoesthelastparagraph(Para.12)perform?

—Theweatherisn’tgoodenoughforanouting,isit？—No.Wecan’thave_________atthistimeoftheyear. A: anicerday B: aworseday C: aworstday D: sofineaday

Niceday,（）?Yes,itis. A: isit  B: isn'tit C: what'sit  D: isn'tthat