单选题：There are more AIDS cases in the United States, China and R

题目内容：

There are more AIDS cases in the United States, China and Russia. A．Right
B．Wrong
C．Not mentioned

参考答案：

答案解析：

以下叙述中正确的是

以下叙述中正确的是A．if语句只能嵌套一层 B．if子句和else子句中可以是任意的合法的c语句 C．不能在else子句中再嵌套if语句 D．改变if-else

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Since I have been ill,my appetite has diminished.A．desire for exercise B．desire

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