（2014届江西省重点中学盟校高三第二次联考英语试卷）30. －Lydia, what did our head-teacher say just now?

－Every boy and every girl as well as the teachers who _____ to lead the group _____ asked to be at the school gate before 6:30 in the morning.

A．is; is

B．are; are

C．are; is

D．is; are

利用无机物合成有机物的结构是叶绿体[ ]