更多"The sharp rise of the snow geese po"的相关试题:
[单项选择]The sharp rise of the snow geese population is mainly caused by ______.
A. lack of natural enemies
B. great care of wildlife preservationists
C. favorable conditions in their winter habitat
D. changes in their migration patterns
[单项选择](Neither) rain (nor) sleet nor snow (keep) the mailman from his (appointed) rounds.
A. Neither
B. nor
C. keep
D. appointed
[单项选择]
Computer systems are usually divided into four main types according to their size. They are supercomputers, mainframe computers, minicomputers and microcomputers.
Microcomputers , also called personal computers, are small computers fit on a desk top and are usually only used by one person. They are the least expensive types, and are widely used in businesses for all kinds of tasks, such as word-processing, small data-base management, and spreadsheets. They are also used as home computers, for family budgeting and similar jobs, as well as for games. Compared with a mainframe computer, minicom puters are smaller systems, and fewer operators can use them. They are usually found in medium-size business or in divisions within a large organization, for example in Government departments. Mainframe computers are large and powerful computers. Many people can use at the same time. They are also expensive systems. They are used for very large processing tasks, and perform ma
A. home computers
B. personal computers
C. microcomputers
D. mainframe
[单项选择]Geographically, Scotland is divided into three main regions:______, the Midland Valley and the Southern Uplands.
A. the Lowlands
B. the Highlands
C. the Pennines
D. the Lake District
[单项选择]The unemployment rate may rise slightly.
A. a lot
B. a little
C. quickly
D. sharply
[单项选择]Western Nebraska generally receives less snow than ________ Eastern Nebraska.
A. in
B. it receives in
C. does
D. it does in
[单项选择]Many people do not engage in physical exercise mainly because ______.
[单项选择]The special education mentioned in the text is mainly concerned with _______.
A. genius students from day-care centers to colleges
B. teachers of language in the University of Arizona
C. students who are fond of computer video games
D. students who are either mentally or physically disabled
