凌霄是一种（）型攀援植物。
A.观叶
B.观花
C.观果
D.赏根
参考答案：B
环氧沥青漆不允许在气温（）以下使用。
A、15℃
B、10℃
C、8℃
D、5℃
The city, __________ by mountains and lakes, is so beautiful that they have decided to stay there for
another two days. [ ]
A. stood
B. connected
C. blocked
D. surrounded
