● The （72） has several major components, including the system kernel, a memory management

● The （71） has several major components, including the system kernel, a memory management

The technology has several advantages earlier attempts to engineer meat in vitro .A、in

A major-party nominee has the critical advantage in the campaign for the presidential elec

The plight of the aged has come to be regarded as a major social problem in the United Sta

In a competitive economy the consumer usually has the choice of several different brands

The English policeman has several nicknames but the most frequently used are “copper” and