Traditionally, people gave Christmas gifts or money to their staff or servants on （）which is the day after Christmas.

The important thing is that this is a major breakthrough. “breakthrough” here means an important development or achievement.

 ______ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

TCP functions at the Open System Interconnection(OSI)(61)layer, or Layer 4. Its chief responsibility is to ensure(62)end-to-end connectivity. IP, located one layer down, at the OSI network layer, or Layer 3, communicates the addresses of each(63)sender and receiver to the routers along the way. Routers and Layer 3 switches can read IP and other Layer 3(64). This information, combined with routing tables and other network intelligence, is all it takes to get(65)the room or around the world via TCP/IP.

Is this（）longer or shorter?

The goal, which they are unlikely to live to see , is tocure, prevent or manage all diseasesin the next 80or so years.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

If you do not know the subject, you will not understand what is said or written, even if English is your mother （） what is said or written.