请根据以上资料,选择以下栏目的正确选项:
“件数”栏:()。
A. 2000
B. 52
C. 13207
D. 1200
参考答案:B
At no point south of the Han River ______ more than a mile.
A. the enemy didn't advanceB. the enemy advancedC. did the enemy advanceD. didn't the enemy advance
政府采取的“绿色标准”可以表现为一种()。
A.技术壁垒
B.国家贸易控制
C.配额限制
D.关税壁垒