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Halley made his discovery ______.
A．by doing experiments
B．by means of his own careful observation
C．by using the work of other scientists
D．by chance
答案
更多“Halley made his discovery ______.A．by doing experimentsB．by means of his own careful obser”相关的问题
第1题
Halley made a surprising, but correct prediction in the year ______.
A．1704
B．1705
C．1706
D．1707
第2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3题
听力原文：When the drawee is bankrupt, presentment may be made to him or to his trustee.
(7)
A．If a drawee is bankrupt, presentment may be made to his trustee.
B．If a drawee is bankrupt, presentment can not be made to him.
C．If a drawee is bankrupt, presentment can not be made to his assignee.
D．If a drawee is bankrupt, presentment must be made to his trustee.
第4题
We all ______ the achievements he has made in his experiments.
A．admire
B．adopt
C．advise
D．adjust
第6题
A.put up
B.found up
C.made up for
D.made up
第7题
A.a way
B.the way
C.his way
D.way
第8题
A.statements
B.symbol
C.symptoms
D.sign
第9题
Mike didn’t understand ______ made his wife so upset this morning.
A、what
B、why
C、how
D、which
