根据录音,选择合适的答案() 查看材料
A. It is very interesting.
B. It is very easy.
C. It is very boring.
D. It is very difficult.
根据录音,选择合适的答案() 查看材料
A. The Italian restaurant.
B. The Indian restaurant.
C. The Chinese restaurant.
D. The Thai restaurant.
蛋白质的二级结构(secondary struture)
根据录音,选择合适的答案() 查看材料
A. Having a rest.
B. Going on with the work.
C. Waiting another minute.
D. Eating some snacks.