题目内容

( ) Works on paper are usually framed behind glass, which solves ____ problem.

A. glare
B. cleaning
C. watch
D. breathing

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( ) If you’re not sure the sculptures inside museums and galleries are touchable, you can ask _______.

A. the museum owner
B. the museum guard
C. the museum cleaner
D. the police

( ) Looking at _______ requires even more walking, becauseyou cannot know it until you have spent considerable time walking around and through it.

A. architecture
B. painting
C. sculpture
D. prints or photographs

钢琴重奏练习技巧要求有哪些？

A. 合奏要整齐
B. 音乐表现要有技巧
C. 各声部弹奏要和谐
D. 踏板运用要双方心灵相通

Ailerons, elevators and rudder are the secondary flight control surfaces of an aircraft.

A. 对
B. 错