题目内容


.______ the beginning of the 19th century did scientists know that all matter is made up of atoms.
A．AtB．ByC．Up toD．Not until
D
略
练习册系列答案
相关题目
  – I can see the problem. But I hope to win and ___________.
---Well put. ______.
A．so do I; So shall IB．so I shall; So shall I
C．so I shall; So do ID．so do I; So I do

Only when we begin our college life______the importance of English.
A．we realizeB．we will realizeC．have we realizedD．do we realize

. Only _____ in a foreign-funded enterprise ______ the importance of learning English well.
A．when I worked, I realizedB．when I worked, did I realize
C．when did I work, did I realizeD．when did I work, I realized
So _____ that modern industry cannot develop without it.
A．electricity is importantB．important is electricity
C．electricity important isD．important electricity is

So convenient ______ that many people would like to do that.
A．is shopping on netB．shopping on net does
C．does shopping on net D．shopping on net is

No sooner ________ at the airport than she was surrounded by the reporters.
A．had the star arrivedB．the star had arrived
C．has the star arrivedD．the star has arrived

．Good job! Not a single mistake ______ in your homework.
A．you madeB．made youC．did you makeD．you did make

---I’m frustrated after so many failures. I can’t see any hope.
---Behind every misfortune ________!
A．lies an opportunityB．does an opportunity lie
C．an opportunity liesD．is an opportunity lying

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网