Test analysis: Question ① is wrong. Since 20 13 1 1, the foreign exchange rate has declined, the foreign currency has appreciated and the RMB has depreciated, so Question ① is wrong and Question ② is correct. Question 3 is wrong. The two-way reasonable fluctuation of RMB exchange rate is a manifestation of respecting the law. It cannot be simply said that it is not conducive to studying abroad and investing in tourism, so it is excluded. The title limb ④ is correct. So the answer is B.