接种疫苗是预防一些传染病最有效、最经济的措施。
参考答案：对
There are few _____ in the fridge. Let's go and buy some potatoes, carrots and peppers. [ ]
A. eggs
B. meat
C. vegetables
D. fruit
西坑大峡谷是武夷山中第一大峡谷。（）
