问题
单项选择题
清水墙的最后一道工序是( )，它具有保护墙面并增加墙面美观的作用。
A．摆砖
B．勾缝
C．挂线
D．立皮数杆
答案
参考答案：B
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清水墙的最后一道工序是( )，它具有保护墙面并增加墙面美观的作用。
A．摆砖
B．勾缝
C．挂线
D．立皮数杆
参考答案：B
Passage Two
What is the size of Larsen B ice shelf before it disintegrated in the 1900s a. It covered more than 2,000 square kilemeters, and was 300 meters thick. b. It covered more than 3,000 square kilemeters, and was 100 meters thick. c. It covered more than 3,000 square kilemeters, and was 200 meters thick. d. It covered more than 2,000 square kilemeters, and was 100 meters thick,