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【单选题】震颤麻痹( )

A.
跨阈步态
B.
慌张步态
C.
剪刀步态
D.
共济失调步态
E.
鸭步

【单选题】2009年7月至2010年5月,PMI增量最大的月份是() A.2009年9月 B.2009年12月 C.2010年3月 D.2010年4月

A.
近几年来,我国开始对国内20个制造业行业中820家企业的采购经理进行月度问卷调查,加工汇总他们对所在行业的采购和供应等问题的判断结果,得到制造业采购经理指数(PMI)。
B.
PMI是一个综合指数,由生产、新订单、主要原材料库存、从业人员、供应商配送时间5个分类指数乘以相应的权数后相加得到。PMI指数反映了当月制造业采购和供应状况相对于上月的变化。各类指数在50%以上,通常反映其对应的某一方面经济扩张;低于50%,通常反映其经济活动衰退。

【单选题】Some People Do Not Taste Salt like Others Some People Do Not Taste Salt like OthersJohn Hayes pointed out that() A.food with less salt tastes better. B.many people make efforts to accept low-salt fo...

A.
Low-salt foods may be harder for some people to like than others, according, to a study by a Penn State College of Agricultural Sciences food scientist. The research indicates that genetic factors influence some of the difference in the levels of salt we like to eat.
B.
Those conclusions are important because recent, well-publicized (大力宣传的) efforts to reduce the salt content in food have left many people struggling to accept food that simply does not taste as good to them as it does to others, pointed out John Hayes, lead investigator on the study.
C.
Diets high in salt can increase the risk of high blood pressure and stroke. That is why public health experts and food companies are working together on ways to help consumers lower salt intake through foods that are enjoyable to eat. This study increases understanding of salt preference and consumption.
D.
The research involved 87 carefully screened participants who sampled salty foods such as soup and chips, on multiple occasions, spread out over weeks. Test subjects were 45 men and 42 women, reportedly healthy, ranging in age from 20 to 40. They rated the intensity of taste on a commonly used scientific scale, ranging from barely detectable to strongest sensation of any kind.
E.
"Most of us like the taste of salt. However, some individuals eat more salt, both because they like the taste of saltiness more, and also because it is needed to block other unpleasant tastes in food, " said Hayes. "Supertasters, people who experience tastes more intensely, consume more salt than nontasters. Snack foods have saltiness as their primary flavor, and at least for these foods, more is better, so the supertasters seem to like them more. "
F.
However, supertasters also need higher levels of salt to block unpleasant bitter tastes in foods such as cheese, Hayes noted. "For example, cheese is a wonderful blend of dairy flavors from fermented (发酵地) milk, but also bitter tastes from ripening that are blocked by salt, " he said. "A supertaster finds low-salt cheese unpleasant because the bitterness is too pronounced. "
G.
Hayes cited research done more than 75 years ago by a chemist named Fox and a geneticist named Blakeslee, showing that individuals differ in their ability to taste certain chemicals. As a result, Hayes explained, we know that a wide range in taste acuity(敏锐) exists, and this variation is as normal as variations in eye and hair color.