题目

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。 A product successful at home does notalways guarantee that it will do well abroad. More than one company has failedto consider that, 1 the price is reasonable, local consumers willoften only be 2 a product if it is modified to fit their local3. It is clearly necessary to take account oflocal 4. Something that tastes good in onepart of the world does not taste so good in others. A large number of 5 food companies have discovered how importantit is to 6 their products to s已知，． （1）若，求的值． （2）若，求的单调的递减区间；