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 ourdecision: __(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 inthe 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?
(1)A、friends
B、forces
C、features
D、expectations
(2)A、neither
B、not
C、either
D、both
(3)A、In
B、According to
C、From
D、To
(4)A、joy
B、frustration
C、pain
D、despair
(5)A、railway
B、bus
C、broadcasting
D、service
(6)A、this
B、so
C、too
D、that
(7)A、by
B、in
C、to
D、for
(8)A、managed
B、tried
C、continued
D、wenton
(9)A、On
B、By
C、From
D、In
(10)A、sick
B、joyful
C、sad
D、great
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第6题:
若51单片机使用频率为6MHz的晶振,则振荡周期为:,机器周期为:,指令周期为:
A.1/6us,2us,不定
B.1/12us,2us,1/3us
C.1/6us,1us,不定
D.1/12us,1us,1/3us