______to nuclear radiation, even for a short time, may produce variants of genes in human bodies.
A Having exposed B. Being exposed C .Exposed D. After being exposed
B
The director asked his staff to ___ the large group of journalists waiting for him to announce his production.
A. adapt to B. attend to C .refer to D. appeal to
B
___ for the breakdown of the school computer network ,Alice was in low spirits.
A. Blaming B. Blamed C. To blame D .To be blamed
B
The rescue work _____ three parts , of which saving the people’s lives is the most important.
A. makes up of B. consists of C. links to D. divides into
B
Plastics and other similar rubbish that does not _____ may not be thrown into the sea anywhere.
A. break down B. break away C. break off D. break through
A
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