要将视野左上方的物像移到视野中央，装片移动的方向应为（）
A.左上方
B.右上方
C.左下方
D.右下方
参考答案：A
设集合M={x|y=2x+1}，集合N={y|y=-x2}，则（ ）
A．M⊆N
B．N⊆M
C．N=M
D．M∩N={（-1，1）}
Exciting as its special effects are ________, there is too much violence in the film.
A．to watch
B．to be watched
C．watching
D．being watched
