.
________ to the trial, this small electronic device was only developed for military use.
| A．Superior | B．Fundamental | C．Previous | D．Accessible |
Soon I heard a ＿＿like that of a door burst inand then a climb of feet.
| A．sound | B．cry | C．voice | D．shout |
Mrs O’Neill asked ＿＿questions and she didn’t scold us either.
| A．no | B．certain | C．many | D．more |
Some parts of the water are very shallow. But in some places it is veryvery ＿＿.
| A．deep | B．high | C．cold | D．dangerous |
You waste much time______pig flu.on the internet..
| A．to know | B．knowing | C．know | D．to be known |
---- Is there a vaccine _____ pig influenza?, I’m anxious to know.
----- Don’t worry, there is a vaccine _____ for pigs against pig influenza
| A．for; available | B．against ; use | C．to; access | D．against; available |