已有声明"double x=3.5;".表达式"(int)x+x"值的类型为___(2)___ 。
参考答案：double
根据提示写单词。
1. We are ______ (have) a picnic.
2. I often go ______ (shop) on the weekend.
3. My b _______ is May 30th.
4. Lily can __________ (clean) the room.
5. This is _________ (he) camera.
把圆的直径缩短20%，则其面积将缩小______。
A．40% B．36% C．20% D．18%
