【单选题】【消耗次数：1】
I’m afraid he _______find the key to this problem.
①
could never
②
never could
③
couldn’t never
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相关题目
【单选题】
—Where is John? I couldn’t find him.— .
①
He is very busy
②
I suppose he could have gone to the meeting room
③
I couldn’t agree more
④
He is good.
【单选题】
He said he would never be intimidated _____ what he didn’t like by big names and authorities.
①
do
②
to do
③
did
④
into doing
【单选题】
40.—I`m sorry I didn`t do a good job. ---Never mind.____you have tried your best.
①
Aboveall
②
Aboveall
③
Atall
④
Afterall
【单选题】
She never married and she never went to school____________ .
①
either
②
also
③
too
④
neither
【单选题】
He never does his homework [填空] others.
①
so careful as
②
as carefully as
③
carefully as
④
as careful as
【单选题】
I know the man by ____ but I have never spoken to him.
①
chance
②
heart
③
sight
④
experience
【单选题】
16. He was put into prison, but he never _____ ,and continued his fight.
①
gave up
②
gave in
③
stopped
④
gave way
【单选题】
He’s never again written ____ as his first one.
①
so good a book
②
such good a book
③
such good book
④
so a good book
随机题目
【多选题】
以下说法不正确的是( )。
①
CBM和CNKI都有主题检索途径
②
CBM和CNKI数据库均可支持直接输入逻辑表达式
③
CBM和Pubmed均采用医学主题词表和中医药学主题词表进行主题标引
④
主题词检索除了可以进行扩展检索和加权检索外,还可以匹配副主题词进行检索
⑤
Pubmed和CNKI数据库均不可支持直接输入逻辑表达式
【单选题】
PubMed常用字段[AD]，表示第一著者的单位、地址（包括email地址），其字段名称是？（）
①
Address
②
Affiliation
③
Article Identifier
④
All Fields