About 71% of the earth’s surface ______ covered with water, but 20% of the world population ______ have access to safe drinking water.
|
A．is; doesn’t |
B．are; don’t |
C．are; doesn’t |
D．is; don’t |
Medical ______ shows that men are more likely to have heart attacks than women.
|
A．expectation |
B．evidence |
C．experience |
D．exchange |
Several years had passed ______ I finally realized the true value of friendship.
|
A．when |
B．that |
C．after |
D．before |
All passengers ______, please fasten your seat belts and remain seated ______ the plane is landing.
|
A．on board; before |
B．abroad; since |
C．on the board; after |
D．aboard; when |
Unfortunately, it was in Yushu County, ______ a 7.1-magnitude earthquake happened on April 14, 2010, ______ a large number of students were buried inside damaged schools.
|
A．which; when |
B．that; that |
C．where; that |
D．where; which |
______ World Exposition in 2010 is the first registered World Exposition in ______ developing country.
|
A．/; a |
B．The; a |
C．The; / |
D．/; the |
