2. 外语
  3. The tourist is prevented from entering a country if he does not have a (n) passport.

The tourist is prevented from entering a country if he does not have a (n) passport.

admin2012-11-22  28
问题 The tourist is prevented from entering a country if he does not have a (n) passport.
选项 A、operative
B、effective
C、valid
D、efficient
答案C
解析 valid的意思是“有法律效力的”，符合本题的题意。其他的三个选项分别是：operative意为“生效地”，常用作表语；effective意为“有效的，效果好的”；efficient意为“效率高的”，均不适合本题的题意。
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