题目内容（请给出正确答案）

[主观题]

Improved consumer confidence is crucial to an economic recovery.()

Improved consumer confidence is crucial to an economic recovery.（)

A、of little importance

B、of critical importance

C、necessary

D、unnecessary

提问人：网友后慧珍 发布时间：2022-01-07

参考答案

查看官方参考答案

如搜索结果不匹配，请联系老师获取答案

您可能会需要：

重置密码查看订单联系客服

安装简答题APP，拍照搜题省时又省心！

更多“Improved consumer confidence i…”相关的问题

第1题

在蒙代尔-弗莱明模型中，浮动汇率制度下的贸易保护政策： A 完全有效 B 完全无效 C 不确定　　　　D效果不显著

A、B

B、A

C、C

D、D

点击查看答案

第2题

This rapid spread was due not only particularly war and the movements __6__of people

点击查看答案

第3题

Qijiguang advocated to build more watch towers in high mountains, which could be used for both garrison and the combat.

点击查看答案

第4题

When an elder-care facility refuses to install Internet technology because of the belief that older people don't have the energy or ability to learn web navigation, they are acting upon ________ prejudice.

A、racial

B、gender

C、age

D、national

点击查看答案

第5题

Cells have several ways of ensuring that their daughters remember what kind of cells they should be. How do differentiated cells maintain their identity?

A．One of the simplest and most important is through a positive feedback loop, where a master transcription regulator activates transcription of its own gene,in addition to that of other cell-typespecific genes. Each time a cell divides, the regulator is distributed to both daughter cells, where it continues to stimulate the positive feedback loop.?The continued stimulation ensures that the regulator will continue to be produced in subsequent cell generations.?Positive feedback is crucial for establishing the “self-sustaining” circuits of gene expression that allow a cell to commit to a particular fate—and then to transmit that decision to its progeny.

B．Although positive feedback loops are probably the most prevalent way of ensuring that daughter cells remember what kind of cells they are meant to be,there are other ways of reinforcing cell identity. One involves the methylation of DNA．In vertebrate cells, DNA methylation occurs on certain cytosine bases. This covalent modification generally turns off the affected genes by attracting proteins that bind to methylated cytosines and block gene transcription. DNA methylation patterns are passed on to progeny cells by the action of an enzyme that copies the methylation pattern on the parent DNA strand to the daughter DNA strand as it is synthesizeD

C．Another mechanism for inheriting gene expression patterns involves the modification of histones. When a cell replicates its DNA,each daughter double helix receives half of its parent’s histone proteins, which contain the covalent modifications that were present on the parent chromosom

E．Enzymes responsible for these modifications may bind to the parental histones and confer the same modifications to the new histones nearby. It has been proposed that this cycle of modification helps reestablish. the pattern of chromatin structure found in the parent chromosome

D．Because all of these cell-memory mechanisms transmit patterns of gene expression from parent to daughter cell without altering the actual nucleotide sequence of the DNA,they are considered to be forms of epigenetic inheritanc

E．These mechanisms, which work together, play an important part in maintaining patterns of gene expression, allowing transient signals from the environment to be remembered by our cells—a fact that has important implications for understanding how cells operate and how they malfunction in diseas

E．

点击查看答案

第6题

下列作家哪位不是19世纪批判现实主义的戏剧家()?

A.托马斯·哈代

B.易卜生

C.萧伯纳

D.契诃夫

点击查看答案

第7题

哈代是19世纪后期英国杰出的现实主义小说家和诗人。他把自己的作品分为三类,其中最重要的长篇小说都属于“人物和环境”这一类,下列作品哪部不属这类()?

A.《远离尘嚣》