A.He created the Post-it Notes. |
B.He offered the new adhesive to Art. |
C.His adhesive made Art’s invention possible. |
D.He often worked and discussed science with Art. |
A.A note on a friend’s door |
B.An ad in a newspaper. |
C.A postcard from abroad. |
D.An e-mail to a friend. |
A.d b a e c | B.b a e d c |
C.d e a b c | D.b d e a c |
A.Economy | B.Recreation |
C.Science | D.Culture |