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【简答题】

I know when the snow melts and the first robins ( 知更鸟 ) come to call, when the laughter of children returns to the parks and playgrounds, something wonderful is about to happen. Spring cleaning. I'll admit spring cleaning is a difficult notion for modern families to grasp. Today's busy families hardly have time to load the dishwasher, much less clean the doormat. Asking the family to spend the weekend collecting winter dog piles from the melting snow in the backyard is like announcing there will be no more Wi-Fi. It interrupts the natural order. "Honey, what' say we spend the weekend beating the rugs, sorting through the boxes in the basement and painting our bedroom a nice lemony yellow ? " I say. "Can we at least wait until the NBA matches are over ? " my husband answers. But I tell my family, spring cleaning can 't wait. The temperatures has risen just enough to melt snow but not enough for Little League practice to start. Some flowers are peeking out of the thawing ground, but there is no lawn to seed, nor garden to tend. Newly wakened from our. winter's hibernation ( 冬眠 ), yet still needing extra blankets at night, we open our windows to the first fresh air floating on the breeze and all of the natural world demanding "Awake and be clean!". Biologists offer a theory about this primal impulse to clean out every drawer and closet in the house at spring's first light, which has to do with melatonin, the sleepytime hormone ( 激素 ) our bodies produce when it's dark. When spring's light comes, the melatonin diminishes, and suddenly we are awakened to the dusty, virus-filled house we've been hibernating in for four months. I tell my family about the science and psychology of a good healthy cleaning at spring's arrival. I speak to them about life's greatest rewards waiting in the removal of soap scum from the bathtub, which hasn't been properly cleaned since the first snowfall. "I'll do it," says the eldest child, a 21-year-old college student who lives at home. "You will ? Wow!" I exclaim. Maybe after all these years, he's finally grasped the concept. Maybe he's expressing his rightful position as eldest child and role model. Or maybe he's going to Florida for a break in a couple of weeks and he's being nice to me who is the financial-aid officer. No matter. Seeing my son willingly cleaning that dirty bathtub gives me hope for the future of his 12-year-old brother who, instead of working, is found to be sleeping in the seat of the window he is supposed to be cleaning. "Awake and be clean!" I say.

题目标签:激素
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参考解析:
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刷刷题刷刷变学霸
举一反三

【单选题】糖皮质激素()

A.
可直接中和细菌内毒素和细菌外毒素
B.
小剂量抑制体液免疫,大剂量抑制细胞免疫
C.
抑制胃酸分泌,促进胃黏液分泌
D.
能兴奋中枢,出现欣快、激动等,甚至可诱发精神病
E.
能明显增加血液中性粒细胞数,增强其游走吞噬功能

【单选题】具有激素性质的维生素是?

A.
维生素B1
B.
维生素B2
C.
维生素D
D.
维生素pp

【单选题】UC激素治疗,正确的是:

A.
减量时先快后慢,总时间3-4个月
B.
激素有效后可维持激素治疗
C.
只适用于治疗重度活动性UC
D.
激素推荐剂量30mg/d

【单选题】哪种激素是甾体激素()

A.
促肾上腺皮质激素
B.
促甲状腺激素
C.
肾上腺皮质激素
D.
甲状腺激素
E.
前列腺素

【单选题】抗脂解激素是

A.
肾上腺素
B.
去甲肾上腺素
C.
肾上腺皮质激素
D.
胰高血糖素
E.
胰岛素

【单选题】以下不属于孕激素的是

A.
左炔诺黄体酮
B.
醋酸甲地黄体酮
C.
米非司酮
D.
黄体酮
E.
醋酸甲羟黄体酮

【单选题】诱发排卵的关键激素是( )。

A.
前列腺素
B.
孕酮
C.
雌激素
D.
促黄体素

【单选题】生长激素的作用()。

A.
促进细胞摄取葡萄糖
B.
促进糖原合成
C.
刺激糖异生
D.
促进三酰甘油的合成
E.
减少糖原分解

【单选题】机体保钠的主要激素是 ( )

A.
抗利尿激素
B.
甲状腺激素
C.
醛固酮
D.
胰岛素

【多选题】调节血糖的激素有

A.
胰岛素
B.
胰高血糖素
C.
糖皮质激素
D.
肾上腺素