What is the proper way to pronounce the same sound linking, such as “kiss someone”（）
A. Pronounce only once
B. Pronounce twice
C. None of the above
D. Hold the same sound longer
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How do we judge whether a sound is a vowel or a consonant（）
A. Whether the sound is loud or not
B. Whether there is sound
C. Whether there is obstruction
D. Whether there is air flow
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
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’）
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