可以将RCH=CHCH0还原成RCH=CHCH2OH的试剂是（）。

A.KMnO4的酸性溶液

B.H2-Ni

C.H2-Pd

D.NaBH4

查看答案

如果结果不匹配，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

安装优题宝APP，拍照搜题省时又省心！

更多“可以将RCH=CHCH0还原成RCH=CHCH2OH的试剂是…”相关的问题

第1题

UE在空闲模式下可以通过那些信道接收系统广播消息（)

A.RCH

B.BCH

C.FACH

D.PCH

点击查看答案

第2题

For years, studies have found that first-generation college students-those who do not have

a parent with a college degree-lag other students on a range of education achievement factors. Their grades are lower and their dropout rates are higher. But since such students are most likely to advance economically if they succeed in higher education, colleges and universities have pushed for decades to recruit more of them. This has created "a paradox" in that recruiting first-generation students, but then watching many of them fail, means that higher education has "continued to reproduce and widen, rather than close" achievement gap based on social class, according to the depressing beginning of a paper forthcoming in the journal Psychological Sciense.

But the article is actually quite optimistic, as it outlines a potential solution to this problem, suggesting that an approach(which involves a one-hour, next-to-no-cost program) can close 63 percent of the achievement gap(measured by such factors as grades)between first-generation and other students.

The authors of the paper are from different universities, and their findins are based on a study involving 147 students(who completed the project)at an unnamed private unive rsity．First generation was defined as not having a parent with a four-year college degree Most of the first-generation students(1 percent) were recipients of Pell Grants，a federal g rant for undergraduates with financial need，while this was true only for 8.6 percent of the students wit at least one parent with a four-year degree Their thesis-that a relatively modest inte rvention could have a big impact-was based on the view that first-gene ration students may be most lacking not in potential but in practical knowledge about how to deal with the issues that face most college students They cite past resea rch by several authors to show that this is the gap that must be na rrowed to close the achievement gap.

Many first-gene ration students"struggle to navigate the middle-class culture of higher education，learn the&39;rules of the game，&39;and take advantage of college resou rces," they write And this becomes more of a problem when collages don&39;t talk about the class advantage and disadvantages of different groups of students Because US colleges and universities seldom acknowledge how social class can affect students&39; educational expe rience，many first-gene ration students lack sight about why they a re struggling and do not unde rstand how students&39; like them can improve .

26. Recruiting more first-generation students has__________________

A.reduced their dropout rates

B.narrowed the achievement gao

C.missed its original purpose

D.depressed college students

The author of the research article are optimistic because__________________A.the problem is solvable

B.their approach is costless

C.the recruiting rate has increased

D.their finding appeal to students

The author of the paper believe that first-generation students__________________A.a re actually indifferent to the achievement gap

B.can have a potential influence on othe r students

C.may lack opportunities to apply for resea rch projects