The China Youth Daily survey found that one reason why college students prefer Chinese brands is ________.
A. they want to support home-grown brands
B. Chinese brands sell well on online shopping carnivals
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With the upgrading of China's manufacturing industry, Chinese brands enjoy _________ competitive edge in the international arena.
A. little
B. great
Match the expressions with their respective meanings or explanations.
风化作用在位置最明显。
A. 地表
B. 地壳中部
C. 地壳深部
河流的截弯取直是河流地质作用中哪种作用造成的?( B )
A. 下蚀作用
B. 侧蚀作用
C. 向源侵蚀作用
D. 机械侵蚀作用