交通信号包括交通信号灯、交通标志、交通标线和交通警察的指挥。
参考答案：对
—Pity you missed the lecture on nuclear pollution.
—I________it, but I was busy preparing for a job interview.(2011·福建)
A．attended
B．had attended
C．would attend
D．would have attended
宫颈深部组织发炎，表层鳞状上皮细胞脱落，由增生的柱状上皮覆盖称为（ ）
A．子宫颈糜烂
B．子宫颈息肉
C．子宫颈肥大
D．子宫颈腺体囊肿
E．子宫颈管炎
