【题目】Enormous pressure as they are faced with，the students remain ________and try hard to achieve their goals.
A. conscious B. optimistic
C. influential D. competitive
在线课程【答案】B
【解析】考查形容词词义辨析。句意：尽管学生们面临巨大压力，他们仍然很乐观，努力实现自己的目标。conscious“有意识的”；optimistic“乐观的”；influential“有很大影响的”；competitive“竞争的”。故选B。