第7页 - 译林版启东中学作业本九年级英语（上下册）

go out for a day with my classmates

 online shopping

 practice playing the piano all night

 find a website about space travel

read articles on the website

talk with sb. on the phone

 make a difference

 change our lifestyle

 use salt to help them keep fish or meat longer

 go bad

wash clothes by hand

 in ancient times

 with the invention/development of

modern

inventions

made

a

great

difference

washed

their

clothes

by

hand

the

invention

of

the

washing

machine

math

scientist

science

radium

laboratory

professor

discovery

discover

unknown

widely

wide

a science professor

the discovery of...

marry a French scientist

discover radium in the laboratory

win the Nobel Prize twice during one's lifetime

die at the age of...

be unknown to humans

push for the use of...

be widely used

one

of

the

greatest

scientists