You can see the stars on a clear night but in the daytime they are A. unbelievableB. invi

问题补充：

You can see the stars on a clear night, but in the daytime they are

A. unbelievable

B. invisible

C. inaccessible

D. unavailable

答案：

A. unbelievable

(答案→)B. invisible

C. inaccessible

D. unavailable

解析：句意：在晴朗的夜里你可以看见星星，但是白天这些星星是看不见的。invisible：看不见的；unbelievable：不可信的；inaccessible：不可接近的；unavailable：得不到的