问题
单项选择题
大多数研究证实脑内最重要的抑制性神经递质是（）
A.5-羟色胺
B.多巴胺
C.β-内啡呔
D.氨基丁酸GABA.γ
E.生长激素释放抑制激素
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
大多数研究证实脑内最重要的抑制性神经递质是（）
A.5-羟色胺
B.多巴胺
C.β-内啡呔
D.氨基丁酸GABA.γ
E.生长激素释放抑制激素
参考答案：D
A man hired a taxi outside the airfield．The cab had a woolen carpet with 36 lace edges．On the glass partition that 37 the driver's seat was a copy of a famous painting．Its windows were all clean．The customer was very much 38 and said to the driver，“I've never seen a nicer 39 ．”“Thank you for your praise．”the driver answered 40 ． “The car isn't mine，”said the driver．“It belongs to the company．I used to be a 41 of cabs．When they returned，all of them were as 42 as garbage cans with cigarette butts and rubbish 43 here and there．On the seats and door-handles could be found something 44 like peanut sauce or, chewing gum．Why so? I thought if the car itself were very clean the passengers would most 45 be considerate and refrain from littering．” “So when I got a 46 to be a taxi-driver，I began 47 my idea into practice-to tidy and 48 the car． Now before a new passenger gets on my car，I'd make a cheek and be sure it is in good order．When my car 49 after a day's work，it always remains 50 ．” When doing a thing，one makes efforts and wants to see the result．To change others，one has to make twice the 51 but get half the result．To change oneself is the other way round-more fruit with less effort．One had better ask oneself why one makes 52 on others much more than on oneself． 53 you take enough care to do as best you can for other people's sake，your efforts will yield results，If you 54 the inner world of your own，examine yourself and wipe out the dust and dirt，instead of fixing your eyes on other people，you will find a cheerful 55 for yourself and create a pleasant environment for others．
|