2021年5月20日，刘某持有一张资金余额5万元的借记卡，通过银行ATM机提取现金。当日刘某最多可提取现金为( )。

色彩可以引起人的情绪反应，也会一定程度影响人的行为。产生这种反应的原因，一是人的先天因素；二是人们对过去经验的潜意识作用。下列关于色彩对人体影响的说法中，正确的是（  ）

在高等代数中，有一个线性变换叫做正交变换，即不改变任意两点的距离的变换 。下列变换中不是正交变换的是(     ) 。

在无权代理的合同中,相对人可以催告被代理人进行追认,行使追认的时间为(   )。

患者，女，46岁，入院时腹痛剧烈，诊断为肠胀气。护士应协助患者采取的体位是（  ）

以下关于固定收益证券综合电子平台的表述，错误的是（  ）。

收益性是指债券能为投资者带来一定的收入，即债券投资的报酬。在实际经济活动中，债券收益表现的形式不包括（  ）。

关于肾移植急性排斥反应的叙述，下列哪项是错误的？（）。

单位会计机构负责人应当具备会计师以上专业技术职务资格或者从事会计工作（  ）年以上。

Passage 2

Several research teams have found that newborns prefer their mothers' voices over those of other people. Now a team of scientists has gone an intriguing step further: they have found that newborns cry in their native language."We have provided evidence that language begins with the very first cry melodies,"says Kathleen Wermke of the University of Wirzburg, Germany, who led the research.

"The dramatic finding of this study is that not only are newborns capable of producing different cry melodies, but they prefer to produce those melody patterns that are typical for the ambient language they have heard during their fetal life, within the last trimester,"said Wermke."Contraryto orthodox interpretations, these data support the importance of human infants' crying for seeding language development."

It had been thought that babies' cries are constrained by their breathing patterns and respiratory apparatus, in which case a crying baby would sound like a crying baby no matter what the culture is, since babies are anatomically identical."The prevailing opinion used to be that newborns could not actively influence their production of sound,"says Wermke. This study refutes that claim: since babies cry in different languages, they must have some control(presumably unconscious) over what they sound like rather than being constrained by the acoustical properties of their lungs, throat, mouth, and larynx. If respiration alone dictated what a cry sounded like, all babies would cry with a falling-pitch pattern, since that's what happens as you run out of breath and air pressure on the throat's sound-making machinery decreases. French babies apparently didn't get that memo."German and French infants produce different types of cries, even though they share the same physiology,"the scientists point out."The French newborns produce ' nonphysiological' rising patterns,"showing that the sound of their cries is under their control.

Although phonemes-speech sounds such as "ki"or"sh"-don't cross the abdominal barrier and reach the fetus, so-called prosodic characteristics of speech do. These are the variations in pitch, rhythm, and intensity that characterize each language. Just as newborns remember and prefer actualsongs that they heard in utero, it seems, so they remember and prefer both the sound of Mom's voice and the melodic signature of her language.

The idea of the study wasn't to make the sound of a screaming baby more interesting to listeners-good luck with that-but to explore how babies acquire speech. That acquisition, it is now clear, begins months before birth, probably in the third trimester. Newborns "not only have memorized the main intonation patterns of their respective surrounding language but are also able to reproduce these patterns in their own [ sound] production,"conclude the scientists. Newborns'"cries are already tuned toward their native language", giving them a head start on sounding French or German (or, presumably, English or American or Chinese or anything else: the scientists are collecting cries from more languages). This is likely part of the explanation for how babies develop spoken language quickly and seemingly without effort. Sure, we may come into the world wired for language(thank you, Noam Chomsky), but we also benefit from the environmental exposure that tells us which language.

Until this study, scientists thought that babies became capable of vocal imitation no earlier than12 weeks of age. That's when infants listening to an adult speaker producing vowels can parrot the sound. But that's the beginning of true speech. It's sort of amazing that it took this long for scientists to realize that if they want to see what sounds babies can perceive, remember, and play back, they should look at the sound babies produce best. So let the little angel cry: she's practicing to acquire language.

Which of the following is closest in meaning to the underlined word "ambient"in Paragraph 2?

片剂包糖衣时，包粉衣层的目的是（   ）