大口径镜头的优点可归纳为三点；便于在暗弱光线下拍摄，便于摄取较小的景深，便于使用（）速度。
参考答案：较高的快门
如何控制汽油的蒸汽压？
Good technique in medicine means less pain and fewer deaths and, _____, it's our duty to master it. [ ]
A. naturally
B. therefore
C. particularly
D. similarly
