______

答案：

参考答案：俗话说，味道好的东西营养一定差。然而美味的黑巧克力却可能是例外。黑巧克力可以使血压平均降低10%。

解析：[听力原文]
If it tastes good it must be bad, so the saying goes, but delicious dark chocolate may be the exception to the rule. It may help lower blood pressure by an average of 10 percent.