The Master or person in charge of a ship shall insure that each deck from which lifeboats are launched is（）.

Each year in the United States, many black teenagers（）of school, either because they cannot keep up or they have to work to support their family.

In most WANs, the network contains numerous cables or telephone lines, each one connecting a pair of

 ______ 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.

In the case of any actual or apprehended loss or damage the carrier and receiver must（）all reasonable facilities to each other for inspecting and tallying the goods.

Over the past 20 years, the Internet has helped change our world in either way or another for the better.

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

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

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.

The policy the United States actually pursued in the first two years of WWI was（）

SOLAS requires a lifesaving training manual be provided in each crew cabin or in the（）.