The World Health Organization gave a warning to the public without any______when the virus of H1N1 hit Mexico in April, 2009.
A.delay | B.effort | C.schedule | D.consideration |
Eating too much fat can _______ heart disease and cause high blood pressure.
A.result from | B.contribute to | C.attend to | D.devote to |
--- Tom, why didn’t you come to the meeting yesterday?
--- I _____, but my car broke down.
A.would | B.had | C.was going to | D.did |
There is no doubt ______ man will conquer nature some day.
A.whether | B.if | C.which | D.that |
______ different life today is from ____ it was 20 years ago.
A.What a , what | B.How , what | C.What, what | D.What a , how |
Paper-making began in China and from here it ________ to North Africa and Europe.
A.spread | B.grow | C.carried | D.developed |