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A. Choose the best answer After all these experiences, I learned a lot and began to grow up. One autumn night , when my parents and I returned from my uncle's house, my mother said that we might leave fo r Australia soon. I was crying on the bus, and some people were turning around to look at me. I could n ot top the thought of never hearing the morning radio programmes in school again . I do not remember myself crying for this reason again. In fact, I think cried very little when I was saying goodbye to my friends and relatives. When we were leaving, I couldn't wait to think about all the places I was going to see--the strange and magical places l had known only from books and pictures. The country I was leaving was hardly in my head then. The following years taught me to think all was going to turn out well, but the idea did not come to me at once. For the first two years, I was really lost--having to study in three schools as a result of family moves. I did not know very clearly what I was or what I should be. Father died and Mother then married again. and things became even more complex ( 复杂 ). More than two years passed, my stepfather and I got used to each other at last. I was often sad, and saw no end to "the hard times ” . My responsibilities in the family increased since I knew English better than everyone else at home.I wrote letters, taught my mother to fill out forms, translated at interviews with immigration of fi c er ( 移民局官员 ) , took my grandparents to the doctor and translated there ... I have learned that all common troubles go away at last if we don't give up My life will turn out all right, even though it will be so hard .
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举一反三
【单选题】在睾酮的17α位引入甲基而得到的甲睾酮,其主要目的是
A.
可以口服
B.
增强雄激素的作用
C.
增强蛋白同化的作用
D.
增强脂溶性,使作用时间延长
E.
降低雄激素的作用
【单选题】女性,26岁。足月分娩后2个月,其婴儿母乳哺喂养,避孕方法应首选
A.
宫内节育器
B.
口服避孕药
C.
阴茎套
D.
安全期避孕
【判断题】是否产品具有竞争力取决于客户服务质量及市场需求,可采取 其他策略(如抢先策略、紧跟策略及低成本策略等提高其竞争力。( )
A.
正确
B.
错误
【单选题】睾酮在17α位引入甲基而得到甲睾酮,主要目的是
A.
增强雄激素作用
B.
降低雄激素作用
C.
可以口服
D.
增强蛋白同化作用
E.
增强脂溶性,延长作用时间
【单选题】某女性,26岁,足月分娩后2个月,其婴儿母乳喂养,避孕方法应首选( )
A.
宫内节育器
B.
阴茎套
C.
复方避孕药
D.
安全期避孕
E.
闭经可不避孕
【单选题】女性,26岁。足月分娩后2个月,其婴儿母乳哺喂养,避孕方法应首选
A.
宫内节育器
B.
口服避孕药
C.
阴茎套
D.
安全期避孕
E.
闭经可不避孕
【单选题】某女性,26岁,足月分娩后2个月,其婴儿母乳喂养,避孕方法应首选(  )。
A.
宫内节育器
B.
阴茎套
C.
体外排精
D.
安全期避孕
E.
闭经可不避孕
【单选题】睾酮在17α位引入甲基得到甲睾酮,其设计目的是()
A.
雄性激素作用增强
B.
雄性激素作用减弱
C.
增加药物的脂溶性,有利于吸收
D.
蛋白同化作用增强
E.
可以口服
【单选题】在睾酮的17α位引入甲基而得到甲睾酮,其主要目的是()
A.
可以口服
B.
增强雄激素的作用
C.
增强蛋白同化的作用
D.
增强脂溶性,使作用时间延长
E.
降低雄激素的作用
【单选题】关于蛋白同化激素的叙述中错误的是
A.
蛋白同化激素是对雄性激素的化学结构进行修饰获得
B.
将睾酮19位甲基去除,得到苯丙酸诺龙,可显著降低雄性激素作用,提高蛋白同化作用
C.
对睾酮的A环进行结构修饰,引入2位羟甲烯基,并且辅以引入17α位甲基,得到更强效的口服蛋白同化激素羟甲西龙
D.
在睾酮的A环并上咪唑环,17α位引入甲基得到司坦唑醇
E.
苯丙酸诺龙蛋白同化作用为甲睾酮的30倍,雄激素活性仅为后者的四分之一
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