属于肺呼吸部的是（）.
A.终末细支气管
B.呼吸性细支气管
C.肺泡管
D.肺泡囊
参考答案：B, C, D
Many people dream of having cars of their own. However, others strongly ________ developing private cars.
A．against
B．object to
C．prepare for
D．long for
中国联通无线数据专网最多能达到几重身份认证（）
A.三重
B.四重
C.五重
D.六重
