He has no ideawhat the book is aboutHehave read it very carefully

Does the old man know the museum very well? —No, this is the first time he __________ here.

依次填人下面一段文字横线处的语句，衔接最恰当的一组是（ ） 唐代安史之乱后， ， ， ， 。 ， ，从而有对本地方的饮食习俗产生影响。①由此形成了长达两百多年的北民南移浪潮②而此时的四川总体来说是和平繁荣的③四川自然也就成为了吸纳北方移民最多的地区之一④由于黄河流域地区饱受政治动荡、战乱频仍、经济残破、民不聊生之苦⑤自然也将北方的饮食文化习俗、传统烹饪技巧带到了四川⑥大量的北方移民迁入四川

Silly me! I forget what my luggage looks like—What do you think of _____over there

comes of skilled workers went up. ______,unskilled workers saw their earnings fall.