计算:(-22)2+(-32)0-(23)-2.

题型:解答题

问题:

计算:(-
2
2
)2+(-
3
2
)0-(
2
3
)-2
考点:零指数幂(负指数幂和指数为1)
题型:解答题

患儿11岁。以“多饮,多尿,多食伴随体重下降”来就诊,下列哪项检查可确诊糖尿病()

A.葡萄糖耐量实验。120分钟血糖>11.1mmol/L

B.任意血糖>6.7mmol/L

C.任意时间血糖>11.1mmol/L

D.尿糖阳性

E.糖化血红蛋白>7%

题型:解答题

几种作物适宜生长的pH范围如下表。取某地土壤浸出液,用pH试纸测得其显碱性。则这种土壤适宜种植的作物是

作物茶树棉花水稻甘草
pH5.0~5.56.0~6.86.0~7.07.2~8.5
A.水稻          B.棉花         C.茶树         D. 甘草

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She’s cute, no question. Symmetrical features, flawless skin, looks to be 22 years old—entering any meat-market bar, a woman lucky enough to have this face would turn enough heads to stir a breeze. But when Victor Johnston points and clicks, the face on his computer screen changes into a state of superheated, crystallized beauty. "You can see it. It’s just so extraordinary," says Johnston, a professor of biopsychology at New Mexico State University who sounds a little in love with his creation.
The transformation from pretty woman to knee-weakening babe is all the more amazing because the changes wrought by Johnston’s software are, objectively speaking, quite subtle. He created the original face by digitally averaging 16 randomly selected female Caucasian faces. The changing program then exaggerated the ways in which female faces differ from male faces, creating, in humanbeauty-science field, a "hyper-female". The eyes grew a bit larger, the nose narrowed slightly and the lips plumped. These are shifts of just a few millimeters, but experiments in this country and Scotland are suggesting that both males and females find "feminized" versions of averaged faces more beautiful.
Johnston hatched this little movie as part of his ongoing study into why human beings find some people attractive and others homely. He may not have any rock-solid answers yet, but he is far from alone in attempting to apply scientific inquiry to so ambiguous a subject. Around the world, researchers are marching into territory formerly staked out by poets and painters to uncover the underpinnings of human attractiveness.
The research results so far are surprising—and humbling. Numerous studies indicate that human beauty may not be simply in the eye of the beholder or an arbitrary cultural artifact. It may be ancient and universal, wrought through ages of evolution that rewarded reproductive winners and killed off losers. If beauty is not truth, it may be health and fertility: Halle Berry’s flawless skin may fascinate moviegoers because, at some deep level, it persuades us that she is parasite-free.
Human attractiveness research is a relatively young and certainly contentious field—the allure of hyper-females, for example, is still hotly debated—but those on its front lines agree on one point: We won’t conquer "looks-ism" until we understand its source. As psychologist Nancy Etcoff puts it: "The idea that beauty is unimportant or a cultural construct is the real beauty myth. We have to understand beauty, or we will always be enslaved by it. \

Paragraph 4 suggests that human beauty may be ______.

A.culturally different

B.a disease-free idol

C.individual-dependent

D.a world agreed value

题型:解答题

制作澄粉面团时,生粉与澄粉的配比是2:8。

题型:解答题

下列不属于闲置商品发布规则的是()

A.已经成交过的闲置商品1个月内不能重新发布

B.已穿过的内衣裤袜禁止出售

C.闲置商品的发布无需遵循商品发布管理规则

D.已开封的食品饮料,保健品等禁止出售

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