首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
医学
A、To illustrate what a great scientist he was. B、To explain why lab equipment must be cleaned carefully. C、To emphasize the need
A、To illustrate what a great scientist he was. B、To explain why lab equipment must be cleaned carefully. C、To emphasize the need
admin
2018-05-06
105
问题
Good afternoon. My name is Mary Raffety. For the next eleven weeks, (26) I will be your lab instructor. The lab experiences you will have are designed to complement your work in Dr. Kaplan’s inorganic chemistry course. Today’s experiment is purposely a short one, (27) it will help you become familiar with the lab setup and equipment.
As your lab instructor, it is my duty to assist you in setting up your experiments and understanding your results. I will also grade your lab notebooks. (28) But I have an even more basic responsibility: your physical safety. I will insist on proper precautions, such as wearing protective goggles at all times. I also expect you to use common sense: (29) don’t wear long scarves that might catch fire; don’t smoke; don’t taste unknown substances.
(30) Let me reinforce this point with a story. Isaac Newton, perhaps the greatest scientist of all ages, lived in a period when the toxic effects of chemicals were less understood than today. He routinely sniffed fumes, tasted chemicals, and used open containers for heating substances. In the early 1690s, he suffered through a period of insomnia, depression and mental instability. Though his biographers linked this situation to problems in his personal life, researchers now think it was a consequence of his lab procedures; they found abnormally high concentrations of lead, mercury and other heavy metals in preserved specimens of his hair.
Consequently, we must learn from the past and put safety first.
26.Who is the speaker?
27.At what point in the semester does this talk take place?
28.Why is the speaker addressing the students?
29.Which of the following are the students told not to wear?
30.Why does the speaker tell the story about Newton?
选项
A、To illustrate what a great scientist he was.
B、To explain why lab equipment must be cleaned carefully.
C、To emphasize the need for proper precautions.
D、To demonstrate how theoretical chemistry has advanced since his day.
答案
C
解析
题目问的是为什么要提到牛顿的故事。由定位句可知,提到牛顿生病的故事是为了强调实验安全步骤的重要性,故选C。
转载请注明原文地址:https://www.kaotiyun.com/show/PvT3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
能反映胰腺外分泌功能的实验室检查方法是
Osteoporosisusedtobecalled"thesilentdisease"becauseitsvictimsdidn’tknowtheyhadituntilitwastoolateandthey
A、Hisnewcarisnotfastenough.B、Hisnewcarmovesveryfast.C、Hisnewcarisarealbargain.D、Hisnewcarissomewhatofa
RobertSpring,a19thcenturyforger,wassogoodathisprofessionthathewasabletomakehislivingfor15yearsbyselling
"Igotcancerinmyprostrate."DetectiveAndySipowiczofthefictional15’Precinct,astoic,bigbearofaman,isclearlyi
A、Themanhasseenthefungiforthreetimes.B、Themanisnotcarefulenough.C、Themanhasbeenwatchingitforthreedays.D、
Asthedefiningepidemicofamodernagenotableforoverconsumptionandexcess,obesityishardtobeat.Theincreasedavailabi
AdolfHitlersurvivedanassassinationattemptin1944withthelampofpenicillinmadebytheAllies,amicrobiologistintheU
A、Hehasaterriblebackache.B、Hehasabadheadache.C、Hehasatoothache.D、Hehasadiarrhea.A从对话场景不难判断出本题是与看医生有关。男士最后一句说“M
Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100females,butthisratiodropstonearbalanc
随机试题
BarbaraPiercewasborninRye,NewYork,thedaughterofMarvinandPaulineRobinsonPierce.Herfather,Marvin,wasthepu
患者,男,45岁。发热、咳嗽3天。自服感冒药和止咳药无明显效果。既往身体健康。查体:右下肺叩浊,可闻及支气管呼吸音。心率98次/分,未闻及杂音。该患者的可能病原为
患者,男,58岁。右侧腹股沟肿块,站立过久出现,平卧消失无痛,有时肿块可进入阴囊。检查发现右侧阴囊内梨形肿块10cm×8cm大小,可还纳,按压内环时腹压增加,肿物不出现,透光实验阴性,初步诊断为
固定修复体戴用一段时间后出现过敏性疼痛,其原因除了
砌体结构的分类,可根据砌体所用块材种类、()、配置钢筋情况进行。
技术标书编制应考虑()。
北上广深等一线城市为缓解交通拥堵,准备收取交通拥堵费。有人赞成。认为收取交通拥堵费有利于缓解拥堵,有人反对,认为这不能从根本上解决问题。对此.你怎么看?
在椭圆=1的第一象限部分上求一点P,使该点处的切线,椭圆及两坐标轴所围图形的面积为最小.
Terrorismhasexistedintheworldforquitealongtime.Whatexactlyisterrorism?Well,therearemanydifferent【B1】______out
Wisebuyingisapositivewayinwhichyoucanmakeyourmoneygofurther.Thewayyougoaboutpurchasinganarticleoraservi
最新回复
(
0
)