请教语法题

jackylpt

1. Richard  was among the first black Amerian writers ____ by whites, notably in his 1940 novel Native Son.
A, who protest treatment of  blacks
B to protest the treatment of blacks
答案是B, 但我认为A 也对, 是定语从句呀.

2.Birds  (have)  a four-chambered heart, forlimbs  (modified)   into wings, a calcareous-shelled egg, and keen  (vision), the major sense they rely on for (informing) about the environment.
答案是D ,请问该怎改

simonxujin

be the first to V,是固定搭配。
information