The atomic weight of oxygen is_____than ______of the hydrogen.
A.15 times heavier; that |
B.15 times heavier: those |
C.16 times as heavier; that |
D.16 times as heavy; those |
Misunderstanding may ______ if people fail to communicate with each other.
A.raise | B.rise | C.arise | D.add up |
My friend Martin was seriously affected by a strange fever; _____ , he could neither eat nor sleep.
A.after all | B.as a result | C.on the other hand | D.however |
Yao Ming, who ______ the Houston Rockets, is working hard to make his dream come true.
A.joined | B.joined in | C.took part in | D.competed in |
Much attention should be paid _______ the wild animals as many of them are dying out.
A.protect | B.to protect | C.protecting | D.to protecting |
It is not rare in _______ that people at the age of forty are going to _________university for further education.
A.90s; the | B.the 90s ; / | C.90s; a | D.the 90s; the |