原子轨道(atomic orbit)
原子轨道(atomic orbit)
原子轨道(atomic orbit)
第2题
A.universal
B.inclusive
C.indefinite
D.conventional
第3题
This passage in general is about ______.
A.Halley and other scientists
B.the orbit of a comet
C.Newton and Halley
D.Halley and his discovery
第5题
According to the passage, which one is NOT true?
A.Newton figured out the orbit of the comet.
B.Halley figured out the orbit of the comet first.
C.Newton gave Halley some help.
D.Halley died before 1758.
第6题
Atomic energy is going to have a______effect on the development of industry.
A.feasible
B.profound
C.painful
D.compound
第8题
Edmund Halley figured out the orbit of ______.
A.some different comets appearing several times
B.the same comet appearing at different time
C.three different comets appearing three times
D.several comets appearing at the same time
第9题
Brittle materials have which of the following characteristics()
A.they undergo a lot of permanent deformation before fracturing
B.they tend to have a very ordered atomic structure
C.they respond poorly to tensile forces
D.A and B