问答题Practice 5　　One by one, economies around the world are stumbling. By cutting interest rates again this week-for the seventh time this year-the Federal Reserve hopes it can keep America out of recession. But in an increasing number of economies, from Ja

The number of home users and small businesses that want to use the Internet is ever increasing. The shortage of addresses is becoming a serious problem. A quick solution to this problem is called network address translation(NAT).NAT enables a user to have a large set of addresses（ ）and one address, or a smallset of addresses,externally. The traffic inside can use the large set; the traffic（请作答此空）, the small set. To separate the addresses used inside the home or business and the ones used for the Internet, the Internet authorities have reserved three sets of addresses as （） addresses. Any organization can use an address out of this set withoutpermission from the Internet authorities. Everyone knows that these reserved addresses are for private networks.They are （） inside the organization, but they are not unique globally. No router will （） a packet that has one of these addresses as the destination address.The site must have only one single connection to the global Internet through a router that runs the NAT software.

A.local
B.outside
C.middle
D.around

Estimates（ ）anywhere from 600,000 to 3 million.Although the figure may vary,analysts do agree on another matter:that the number of the homeless is increasing,one of the federal government’s studies predicts that the number of the homeless will reach nearly 19 million by the end of this decade.

A.cover
B.change
C.range
D.differ

资料：Large industrialized are now in a recession. What are the prospects for economic recovery?
The three most important industrial economies in the world are, at the moment, facing enormous problems. Germany is struggling with the cost of reunification and is in recession. Japan is also experiencing recession and the United States has a large budget deficit.
Forecasters and analysts face questions about the prospects of an economic recovery. Here are some of their findings:
The election of a new president of the United States gave hope to the rest of the world. If the US recovered, the rest of the world would face a more promising future. However, analysts now accept that the US will only recover very slowly.
Consumer and investor confidence is still lacking. Large deficits and declining short-term interest rates mean there is little scope for economic stimulus.
The Japanese economy, after years of trade and budget surpluses, is in deep recession and the growth rate has slowed down considerably. German economists have lowered their forecasts for economic growth this year. The lowering of German interest rates may bring some relief to other members of the European Exchange Rate Mechanism （ERM）. However, Germany's importance as Europe's largest export market may decline.
However, in some parts of the world, there are more positive signs, particularly in some Latin American countries in South-East Asia. Analysts says that, as long as the rate of interest stays above the rate of growth at national income, then the ratio of debt to income will get worse. Falling interest rates help towards overcoming this problem. They believe it may take several years before there is real recovery. However, advances in technology are offering hope for the world economy.

The tone of the passage suggest that the author is ______about the world economy.

A.doubtful
B.indifferent
C.positive
D.pessimistic