The candidates of the PhDs in the field of science and engineering is facing a competition
A. technology
B. foreign nationals
C. such fields as law
D. postgraduates
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What is the conversation mainly about？
A. How to do well in poetry examination.
B. The effect of caffeine.
C. Some causes of heart disease.
D. Problems with the man"s cafeteria.
What is the reason that more parents are taking on the responsibility of educating their children at home？
A. Teacher shortages and lack of funding.
B. Escalating classroom violence.
C. Large class and problems inside the classroom.
Dissatisfaction with the educational system.
This move deprived the prisoner of his______of escape. （1993年考试真题）
A. ways
B. possibilities
C. plans
D. means
In vain______to get the machine sold yesterday.
A. he tried
B. had he tried
C. he had tried
D. did he try
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