Questions 11--13 are based on the following passage. How many languages are spoken in the world today
A. 4,500.
B. 4,000.
C. 3,500.
D. 3,000.
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Questions 18--21 are based on the following passage. Why the Toluker Prison called an open prison
A. The prison gates are always open.
B. Its prisoner can work outside.
C. The prison has no armed guards.
D. The prison is open to the publi
What are they talking about
A. Weekend plan.
B. Changing in the city.
C. Going camping in the summer.
D. Life in the summer.
“电子转单”是产地商检部门将属于法定商检的出境货物进行检验检疫后的相关情况以电子信息的形式传输至口岸报关部门，由其签发《出境货物通关单》供口岸海关报关之用。( )
A. 对
B. 错
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