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【单选题】
若学生表结构中包括、姓名、成绩等字段,则“查询所有成绩为不及格学生的姓名”的SQL语句是___________。A.
SELECT * FROM学生WHERE成绩<60
B.
SELECT姓名FROM学生WHERE成绩<60
C.
IF成绩<60 THEN SELECT姓名FROM学生
D.
IF成绩<60 SELECT姓名FROM学生
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举一反三
【简答题】There are thirty sentences in this section. Beneath each sentence there are four words or phrases marked[A], [B],[C] and [D]. Choose one word or phrase that best completes the sentence. Mark your answ...
【简答题】There are thirty sentences in this section. Beneath each sentence there are four words or phrases marked[A], [B],[C] and [D]. Choose one word or phrase that best completes the sentence. Mark your answ...
【简答题】There are thirty sentences in, this section. Beneath each sentence there are four words or phrases marked [Al,[B],[C] and[D]. Choose one word or phrase that best completes the sentence. Mark your answ...
【多选题】旋花科植物的种子类药材有（ ）A．足仙子B．牵牛子C．栀子D
A.
第 76 题 旋花科植物的种子类药材有（ ） A．足仙子
B.
牵牛子
C.
栀子
D.
枸杞子
E.
菟丝子
【简答题】Words which introduce the sentence complement are termed c .
【单选题】The study of the rules whereby words or other elements of sentence structure are combined to form. grammatical sentences is______.
A.
syntax
B.
semantics
C.
morphology
D.
sociolinguistics
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