燃气涡轮发动机中的扩压器位于（）.
A.压气机和燃烧室之间
B.燃烧室和涡轮之间
C.涡轮和喷管之间
D.排气管和喷口之间
参考答案：A
Only after one has become a parent _____ how great his parents are．
A．he will realize
B．will he realize
C．that he realizes
D．he does realize
He told us that the moon ____very far from the earth. [ ]
A. was
B. are
C. is
