题目内容
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__________ 查看材料A.standB.meanC.helpD.quit
__________ 查看材料
A.stand
B.mean
C.help
D.quit
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__________ 查看材料
A.stand
B.mean
C.help
D.quit
Which of these words best describes Beethoven's music when his hearing began to fail?
A.Stately.
B.Elegant.
C.Turbulent.
D.Loud.
When the old man ______ to walk back to his house, the sun ______ itseff behindthe mountain.
A.started; had already hidden B.had started; had already hidden
C.had started; was hiding D.was starting; hide
The primary reason for using a coupling agent(silane)in a resin composite is to()
A.stabilize its shade
B.improve its physical properties
C.provide it with a pleasant odor
D.make it more reflective