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單項(xiàng)選擇題

In case of accidents（）the risk of sinking，all effective measures shall be taken to steer clear of the fairway to avoid（）the traffic.

A.involving／impeding
B.involved／to impede
C.involving／to impede
D.involved／impeding

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單項(xiàng)選擇題

If you do not wear goggles and helmet，your chances of being（）will be greater.

A.beaten
B.damaged
C.hurt
D.stricken

單項(xiàng)選擇題

If the sling bumps（）the beams，serious accidents may follow．

A.at
B.on
C.into
D.against