Most likely passage for the test:
Ah, love, let us be true
To one another! for the world, which seems
To lie before us like a land of dreams,
So various, so beautiful, so new,
Hath really neither joy, nor love, nor light,
Nor certitude, nor peace, not help for pain;
And we are here as on a darkling plain
Swept with confused arlarms of struggle and flight,
Where ingnorant armies clash by night.
Context: On his honeymoon, Arnold is telling his wife that the world around them is terrible. There is no hope to find joy or love of peace or anything in the world. Their only hope is to remain true to one another. Otherwise they will be blind on this darkling plain, like the armies who fought at night, unable to make any sense of who they were fighting, ally or enemy. They will be lost unless they hold each other true.