15.Fredturnedhishead,tryingto()breathinginthesmoke.15.Fredturnedhishead,tryingto()breathinginthesmoke.A.refuseB.avoidC.objectD.expect满分：4分16.（）manfirstmadeuseofelectricityisnotexactlyknown.A.WhatB.AlthoughC.Si

Question

15.Fred turned his head,trying to () breathing in the smoke.
15.Fred turned his head,trying to () breathing in the smoke.
A.refuse
B.avoid
C.object
D.expect
满分：4 分
16.（） man first made use of electricity is not exactly known.
A.What
B.Although
C.Since
D.When
满分：4 分
17.Our new policy is to （） on developing these remote areas.
A.aim
B.carry
C.focus
D.resort
满分：4 分
18.When you meet people you don’t know at a party,the hostess usually gives you （） to them.
A.explanations
B.information
C.introductions
D.invitations
满分：4 分
19.The principle （）gas can do work while expanding has been applied to the steam engine.
A.what
B.when
C.how
D.that
满分：4 分
20.It isn’t quite （） that he will be present at the meeting.
A.certain
B.sure
C.right
D.exact
满分：4 分

Answer 1

15 选 B
16 选 D
17 选 B
18 选 C
19 选 D
20 选 A