光圈系数值越大 ，光圈越（），通光量越（）。
参考答案：小；少
Questions 11 to 18 are based on the conversation you have just heard.
A．Go fishing.
B．Eat in a restaurant.
C．Go shopping.
D．Buy some fish.
下列程序段的输出结果是______。 i=1 DO WHILE i＜9 i=i+3 ENDDO i
