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更多“Is it easy or difficult to lea…”相关的问题
A.a difficult
B. a troublesome
C. easy
D. an easy
A.embrace
B.browse
C.capture
D.trade
Training astronauts______not an easy thing.
A．are
B．is
C．were
D．be
A.make
B.help
C.let
D.Allow
Why do you think they had not a backup computer？
A. Because it was easy down.
B. Because it was very expensive.
C. Because it was not advanced enough.
D. Because it was not as big as the main computer.
A．hurry up
B．turn up
C．take your time
D．take it easy
Thousands of years ago, life was ______ it is today.
A．much easier than
B．as easy as
C．as hard as
D．much harder than
A good way to train an animal to do something quickly is to ______.
A．make the action easy
B．praise it in words
C．reward it with food
D．weaken its motivation
