更多"Of all the elements in the Earth's "的相关试题:
[单项选择]The Earth's crust ______.
A. can be classified into two types
B. is formed along the margins of the plates
C. consists of semi-molten rocks
D. is about 70 to 100 kilometers thick
[单项选择]Oxygen is one of the elements ______ water consists.
A. of which
B. of that
C. by which
D. that
[单项选择]As all the people of the world share one earth, industrial countries should be responsible for helping ______ and ______ countries.
A. developed... underdeveloped
B. developing... underdeveloping
C. developing... underdeveloped
D. developed... underdeveloping
[判断题] The purpose of the oxygen system is to provide oxygen for the flight crew and passengers when required. Two independent oxygen system are installed in B737. ( )
A.正确
B.错误
[单选题]The primary cause of all changes in the Earth’s weather is _______ .
A.variation of solar energy received by the Earth’s regions
B.changes in air pressure over the Earth’s surface
C.changes in air moisture content
D.movement of the air masses
[单选题]The flight altitude for aircraft with no oxygen equipment or whose oxygen equipment is unserviceable should not exceed _______ meters.
A.3600
B.4000
C.4500
D.5000
[单项选择]Differences in positions adopted by oxygen and hydrogen atoms account for variations in the structure of different forms of ice.
A. are caused by
B. explain
C. derive from
D. constitute
[单项选择]The essential elements of science fiction include
A. a narrator, a plot, environment
B. a story, surroundings, heroes
C. a narrator, a story, theme
D. a narrator, a story, a plot, character, setting, language
[单项选择]Water is ______ hydrogen and oxygen.
A. made up
B. made up of
C. made by
D. making by
[单项选择]What are the elements that produce human emotions
A. Some strong uncontrolled forces which trigger emotions.
B. Internal processes such as illnesses, happiness, anger, etc.
C. External happenings such as deaths, divorce, promotions, etc.
D. External environmental events as well as internal mental processes.
[单项选择]Hydrogen is one of the most important elements in the universe ______ it provides the building blocks from which the other elements are produced.
A. so that
B. but that
C. provided that
D. in that
[单选题]_______ is a circle on the surface of the earth, the plane of which passes though the centre of the earth.
A.great circle
B.circle distance
C.a turn
D.turning degree
[单项选择]Earth scientists have come to understand that climate______.
A. is going through a fundamental change
B. has been getting warmer for 10 000 years
C. will eventually change from hot to cold
D. has gone through periodical changes
[单项选择]Sculpture has occasionally been found in the earth in an almost pure state.
A. regularly
B. accidentally
C. sometimes
D. successfully
[单项选择]Sulphur has occasionally been found in the earth in an almost pure state.
A. regularly
B. accidentally
C. sometimes
D. successfully
[单项选择]Some scientists have suggested that Earth is a kind of zoo or wildlife （） for intelligent space beings, like the wilderness areas we have set up on earth to allow animals to develop naturally while we observe them.
A. conservation
B. maintenance
C. storage
D. reserve
