It said the country's confirmed H7N9 cases were isolated and there has been no______ of human-to-human transmission.
| A．mark | B．symbol | C．sign | D．signal |
相关试题
We must ____ to the public the simple fact that drugs are very dangerous．
| A．get across | B．get away | C．get back | D．get behind |
Curious about the world around him, my son____ask me endless questions when he was young．
| A．could | B．might | C．should | D．would |
—Hangzhou, which we visited last week is quite beautiful．
—We should thank Tom．He ____ us to．
| A．had persuaded | B．persuaded | C．was persuading | D．persuades |
It is said that he’s looking for a new job, one ____he can get more money to support his family．
| A．when | B．where | C．that | D．which |
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