partⅡ.問答題(2期,共20分)請於試卷内之「非選擇題作答區」依序作答,並應註明作答之大題及小題題號。 1.Provide structural features for the following groups or compounds; (a) gem-dichloride, (b) formyl, (c) (trifluoromethanesulfonyl, and (d) azo compound. (8 points, 2 points/each)