石家庄某报关公司(无异地报关备案),经常受河北石家庄地区的进出口公司的委托,在石家庄及其所属的秦皇岛、唐山等地海关为这些公司办理进出口货物手续等事宜。 ( )
参考答案:对
We have to give the users something new ________ what we've already offered, which is the only way to broaden the appeal of the website. [ ]
A. regardless of
B. in addition to
C. in exchange for
D. according to
绿眼虫可进行光合作用,合成的代谢产物为()。
A、淀粉粒
B、副淀粉粒
C、食物泡
D、叶绿体