You can’t see things clearly through a telescope unless it is correctly to your sight.A.

问题补充：

You can’t see things clearly through a telescope unless it is correctly to your sight.

A. adjusted

B. examined

C. checked

D. tested

答案：

(答案→)A. adjusted

B. examined

C. checked

D. tested

解析：句意：如果望远镜不能正确的按照你的视力调整你不可能清楚地看见东西。Adjust调整；examine检查；check检查；test实验。根据句意故选A。