I had worn out two pairs of boots on the walking tour , I needed a third one (疑问：此处的a third 能不能换成the third ）谢谢

– I wonder how much you charge for your services.

-- The first two are free the third costs $30.

A. whileB. until

C. whenD. before

I am the relieving/ in-coming third officer, here is my ID card.

A.use

B.overuse

C.write

D.put

In ship construction, keel scantlings should be the greatest ______.

A.at each frame

B.amidships

C.one-third the distance from the bow

D.one-third the distance from the stern

12． About_______ of the workers in the factory were born in the __________．

A． two- thirds;1970

B． two- thirds ; 1970s

C． two-third ; 1970

D． two-third ; 1970s

A.other

B.the other

C.the third

D.a third

About ________ of the workers in the factory were born in the ________.

A.two-thirds, 1970 B.two-thirds, 1970s C.two-third,1970 D.two-third, 1970s

It is the third time that I ______ here.

A. was

B. am

C. have been

D. had been

材料：

Immediately upon receipt of advice of any accident or loss to the insured vessel，it is the duty of the Insured to give notice to the Insurer within 48 hours，and if the vessel is abroad，to the Insurer&39;s nearest agent immediately，and to take all reasonable measures for the purpose of averting or minimizing a loss which would be recoverable under this insurance． Measures taken by the Insured or the Insurer with the object of averting or minimizing a loss which would be recoverable under this insurance shall not be considered as waiver or acceptance of abandonment or otherwise prejudice the rights of either party．

The Insured shall obtain prior agreement of the Insurer in determining the liabilities and expenses in respect of the insured vessel．

In submitting a claim for loss，the Insured shall transfer to the Insurer all necessary documents，and assist him in pursuing recovery against the third party in case of third party liabilities or expenses being involved.

问题：

Which are the duties of the Insured upon receipt of advice of any accident or loss to the insured vessel ___________．

I．To take all reasonable measures for the purpose of averting or minimizing a loss insured against；

II．To give notice to the Insurer within 48 hours；

III．To obtain prior agreement of the Insurer in determining the measures to be taken for the purpose of minimizing a loss insured against．

A.I，II and III

B.I and II

C.I and III

D.II and III

The word“abandonment”in the second paragraph of this passage means ______．A.“giving up the hope to rescue the insured ship”

B.“leaving the sinking ship”

C.“discharging the Insurer's liability for the insured ship”

D.“giving the ownership of the insured vessel to the Insurer”

If third party liabilities or expenses is involved in a claim for loss，the Insured shall ______．A.transfer all necessary documents to the third party

B.assist the Insurer in pursuing recovery against the third party

C.obtain prior agreement of the third party in determining the liabilities and expenses in respect of the insured vessel

D.ask the third party to accept abandonment

“Third party”in the last paragraph of this passage refers to ______．A.the Insurer

B.the Insured

C.any party other than the Insurer and the Insured

D.either the Insurer or the Insured

请帮忙给出每个问题的正确答案和分析，谢谢！