参考答案：
[第四单元]; 第5小题： A 文章有两个关键词：see 和perceive，主要阐述人的大脑如何解读眼睛所看到的事物。选项B的意思为―通过科学了解大脑‖，C为―颜色和人‖，D为―怎样成为心理学家‖，皆和文章主要内容不符。
46. Optimism and pessimism are both powerful __(1)__, and each of us must choose which we want to shape our outlook and our expectations. There is enough good and bad in everyone’s life—ample sorrow and happiness, sufficient joy and pain—to find a rational basis for __(2)__ optimism or pessimism. It’s our decision: __(3)__ which perspective do we want to view life? Will we look up in hope or down in __(4)__?
Years ago, I drove into a __(5)__ station to get some gas. As I walked into the station to pay for the gas, the attendant said to me, ―How do you feel?‖ That seemed like an odd question, but I felt fine and told him __(6)__ ―You don’t look well,‖ he replied. This took me completely __(7)__surprise. A little less confidently, I told him that I had never felt better. Without hesitation, he __(8)__ to tell me how bad I looked and that my skin appeared yellow.
__(9)__ the time I left the service station, I was feeling a little uneasy. About a block away, I pulled over to the side of the road to look at my face in the mirror. Did I have a bad liver? By the time I got home, I was beginning to feel a little __(10)__. Had I picked up some rare disease?
[共10题] (1) (A) friends (B) forces (C) features (D) expectations
你选择的答案： 前次作业时已经做对 [正确] 正确答案：B (2) (A) neither (B) not (C) either (D) both
你选择的答案： 前次作业时已经做对 [正确] 正确答案：C (3) (A) In
(B) According to (C) From (D) To
你选择的答案： 前次作业时已经做对 [正确] 正确答案：C
(4) (A) joy (B) frustration (C) pain (D) despair
你选择的答案： 前次作业时已经做对 [正确] 正确答案：D (5)
(A) railway (B) bus
(C) broadcasting (D) service
你选择的答案： 前次作业时已经做对 [正确] 正确答案：D (6) (A) this (B) so (C) too (D) that
你选择的答案： 前次作业时已经做对 [正确] 正确答案：B (7) (A) by (B) in (C) to (D) for
你选择的答案： 前次作业时已经做对 [正确] 正确答案：A (8)
(A) managed (B) tried (C) continued (D) went on
你选择的答案： 前次作业时已经做对 [正确] 正确答案：C (9) (A) On
(B) By (C) From (D) In
你选择的答案： 前次作业时已经做对 [正确] 正确答案：B (10) (A) sick (B) joyful (C) sad (D) great
你选择的答案： 前次作业时已经做对 [正确] 正确答案：A 参考答案：
[第四单元]; 第10小题：A 从上文来看应为―我感到身体不舒服‖，因此选feel sick 。