鱼鳃进行气体交换的部位是 [ ]
A．鳃盖
B．鳃丝
C．鳃耙
D．鳃弓
答案：B
The foreiger knows little about ______ is called "Hope Project" in China.
A．what
B．that
C．which
D．it
二进制数1010.101对应的十进制数是
A．11.33
B．10.625
C．12.755
D．16.75
