正交软件体系结构由组织层和线索的构件构成。
参考答案：对
A great number of visitors ______attracted to my hometown, and the number of foreigners there_____ quite large.
A．are; are
B．is; are
C．are; is
D．is; is
红光的互补色光为（）。
A.绿
B.青
C.蓝
