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更多“An alkaline earth element is r…”相关的问题
A．peroxidase staining(POX)
B．Sudan black B staining(SB)
C．staining for glycogen(periodic acid-schiff，PAS)
D．neutrophil alkaline phosphatase staining(NAP)
E．none of above
A.inside the earth
B.inside earth
C.inside an earth
D.on earth
It can be learned from the passage that about four billion years ago ______.
A．the earth was in molten state
B．the earth surface temperature was above 100℃
C．the earth surface temperature was below 100℃
D．rain water could remain on the earth
A.the earth’s surface
B.the surface of earth
C.the earth surface
D.the surface of the earth
It can be learned from the passage that about four billion years ago ______.
A. the earth was in molten state
B. the earth surface temperature was above 100℃
C. the earth surface temperature was below 100℃
D. rain water could remain on the earth
The spacecraft______the earth three times.
A．orbited
B．flew
C．ordered
D．spaced
The purpose of Earth Day is ______.
A．to help people memorize the earth
B．to help people to learn how to protect the earth
C．to unite all the people on the earth
D．all of the above
The term for synthetic polymers used on soil, rock, and earth in construction.
A．Aramide B．Earthscreens C．Geosynthetics D．Styrofoams
The sun' s energy indirectly provides the earth with ______.
A．fuels
B．waterpower
C．light
D．both A and B
