公共英语考试

【单选题】 The theory says that during the daytime the space animals ______.
A．glow brightly in the sky
B．are invisible
C．can be seen from the earth
D．visit the earth's surface

网考网参考答案：B
网考网解析：
解析：由第二段最后一句话“During the day they become invisible”可推知答案。 查看试题解析出处>>