In a way,________global warming is a challenge for man,so we must overcome it to build________fine world.
A . the;/B . a;theC . a;/D . /;a
It is ________ tradition for people in this country to pay in________cash when buying things.
A . the;/B . a;/C . ;/theD . a;the
While he was investigating ways to improve the telescope, Newton made ________ discovery which completely changed _________ man's understanding of color.
A . the; aB . a ; theC . a; 不填D . 不填;the
In1860s, the Italian archaeologist Giuseppe Fiorelli was madedirector of the Pompeii dig.
A . the; /B . the; theC . /; /D . /; the
In ________ 1600's, Shakespeare made use of ________ wider vocabulary than ever before.
A . the; /B . / ;/C . the; aD . /; a
The development of industry has been_______ gradual process throughout _______ human existence, from stone tools to modern technology.
A . 不填, theB . the; aC . a; 不填D . a; a
Ted couldn't remember the exact date of the storm, but he knew it wasSunday because everybody was at church.
A . /, theB . a, /C . /, aD . the, /
—What ________ fun it is to play with computer games!
—Don't you think it's ________ waste of time?
A . a; aB . /; aC . /; theD . the; the
Only a short-sighted man will lose _______ sight of the importance of education.
A . aB . theC . /D . an
It is believed that travelling to Yaan in ________ October is ________ enjoyable experience.
A . /; theB . the; anC . /; anD . the, the
Usually we are at ________ on ________.
A . the church; SundayB . church; SundaysC . the church; SundaysD . church; a Sunday
I've found that many people are still in _____ habit of writing silly things in _____ public places.
A . the; theB . /; /C . the; /D . /; the
China attained _____ independence in 1949, afterlong struggle.
A . /; aB . the; aC . an; /D . an; the
What is amazing in _______ nature is that dramatic changes may occur in ________ space of a few minutes.
A . /; aB . the; aC . /; /D . the; /
I would wear ______ unique green hair when I was in my twenties.
A . aB . anC . theD . /
The police have ________ power to arrest bad people by ________ law.
A . the; theB . /; /C . the; /D . /; the
Do you think it is ________ good manners to hear others' conversations in ________ curious manner?
A . the; aB . /;/C . /;aD . the; the
It is well-known that ____ year 2020 saw many developments in ____ science and technology, with those in the field of space science being particularly notable.
A . /; /B . /; theC . the; theD . the; /
He used to be ________ teacher but later he turned ________ writer.
A . a; aB . the; /C . a; aD . a;/
We each took a cup of ________ tea after having ________ wonderful supper at my aunt's yesterday.