Why do people like reading poems（）
A. To get information
B. To learn about the old times
C. To know the poet
D. To enjoy the beauty of language
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English phonemes aredivided into vowels and consonants. The distinction between the two lies in the obstruction of____（）
A. mouth
B. nose
C. vocal cords
D. airstream
为studentdb数据库的student_info表的“学号”列添加有效性约束：学号的最左边两位字符是01，正确的SQL语句是（）
A. CREATE TABLE student_info ALTER 学号 CHECK（LEFT（学号,2）=’00’）
B. ALTER TABLE student_info ALTER 学号 CHECK（LEFT（学号,2）=’01’）
C. ALTER TABLE student_info ADD CONSTRAINT 学号 CHECK（LEFT（学号,2）=’01’）
D. CREATE TABLE student_info ADD CONSTRAINT 学号 CHECK（LEFT（学号,2）=’01’）
Her hair was a deep black, cropped short and pointing in every direction（）
A. sense of sight
B. sense of hearing
C. sense of
D. touch
E. D．sense of smell
F. E．sense of taste
The local street snacks are hot, spicy and salty（）
A. sense of taste
B. sense of hearing
C. sense of touch
D. sense of smell
E. sense of sight
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