A-A+
It was from the Lowell Laboratory that the nin
问题详情
It was from the Lowell Laboratory that the ninth ______ Pluto, was sighted in 1930.
A．planet
B．constellation
C．stardom
D．satellite
参考答案
正确答案：A
解析：A．planet行星(尤指太阳系)；B．constellation恒星群，星座；C．stardom明星的身份，演员们；D．satellite人造卫星，又知Pluto是冥王星；答案应为A。
