两个都是质数的连续自然数是______和______.
两个都是质数的连续自然数是2和3.
故答案为:2,3.
—Good luck with your new diet.
—_____. [ ]
A. No, thanks
B. Thanks
C. That's all right
D. That's OK
导游人员带团应有哪些要领?