【填句补文】“Geochemists just want an intuitive sense of what’s going on with the elements,” says Albert Galy from the University of Cambridge ________.
A
An earth scientist has rejigged the periodic table(元素周期表)to make chemistry simpler to teach to students.
B
The traditional periodic table was well drawn.
C
“I imagine contour lines would be good for undergraduates.”
D
But he has added contour lines to charge density, helping to explain which ions react with which.