2020考研调剂系统的开通时间，你还不知道？

以下哪项试验室发现有助于鉴别缺铁和维生素B12缺乏
A.血小板减少 B.血红蛋白减少
C.血清LDH升高 D.红细胞减少

I couldn't stop crying.Months oflate evenings and demanding travel had l my professional exterior.I tried to 2 my quarterly numbers while my colleagues squirmed（局促不安）in their seats,offered me a box oftissues,or just 3.My boss 4 ended the meeting.My colleagues quickly 5 the room.l was left 6 in the conference room,crumpled tissues in hand.For women,crying in a professional 7 is often seen as the kiss of death:"Stop crying!Someone will see you.""Quick,run to the ladies'room!"These are just two 8 0f similar wamings I've heard throughout my career.But it's not just me.Female friends and colleagues have told me they too have been told to 9 the waterworks.It's a familiar 10 for women who cry at work:Escape to bathroom.Grab toilet paper.Wipe eyes.Blow nose.Take deep breath and sashay back into the conference rooms,banquet halls,auditoriums and hallways.Act as ifwe really did just have to use the 11.If,however,we can't make a pre-tears escape,we're likely to 12 0ur tails between our legs:"I'm so sorry.""Don't worry,that will never happen again.""You're right,that was so unprofessional."Most of the women I spoke with about this 13 explain that to cry in front of colleagues,especially male peers or bosses,14 as one ofthe most humiliating professional experiences.But times and corporate culture are both changing.Could crying have a less negative feeling ifleaders 15 it as natural?16 gender,leaders need to be trained on how t0 17 crying as another form of emotional expression.The 18 from the top needs to be that no one will lose credibility or be seen as less competent if they cry.Rather,they will be viewed as being 19 while helping to create an even more 20 workplace culture.10选？

A.message
B.narrative
C.agenda
D.context

下列关于肽键性质和组成的叙述，正确的是