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【单选题】
When you’ve finished school, don’t forget to come back to visit your school, ______?A.
will you
B.
do you
C.
have you
D.
won’t you
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【简答题】高分子化合物有哪些特点?
【单选题】用球柱镜中和法在100cm检影时,两主子午线90度和180度方向都是逆动,先中和90度方向速度快影动用负球镜片-1.50 DS,在些基础上再加负柱镜片-0.50DC轴向对准90度中和180度方向影动,则被检眼的屈光不正度为( )。
A.
-2.50 DS/ -0.50DC×180
B.
-1.50 DS/ -2.00DC×180
C.
-2.50 DS/ -0.50DC× 90
D.
-2.00 DS/ -0.50DC× 90
【单选题】Of one thing I am certain _____ hard work contributes to good results.
A.
as
B.
what
C.
which
D.
that
【单选题】听力原文：W: You are good at maths and chemistry. But not physics. M: I will work hard at it next term. Q: At what subject will the man work hard? (8)
A.
Chemistry.
B.
Physics.
C.
History.
D.
Maths.
【单选题】I hold the _____ that hard work will surely lead to good result.
A.
aptitude
B.
altitude
C.
attitude
D.
attribute
【简答题】高分子化合物有哪些特点？
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