单项选择题
I find （）
A.it difficult for them to finish the job in time B.difficult for them to finish the job in time C.they have much difficulty to finish the job in time D.that difficult for them to finish the job in time
单项选择题 The pollution prevention regulations do not apply to the transfer or discharge of （）
单项选择题 The first step you would take in helping an unconscious victim who is not breathing is（）
单项选择题 Your assigned emergency station aboard ship can be found on the ship’s （）
