【单选题】What can be inferred about the professor?
A.
He is not very polite to his class.
B.
He encourages the students to participate.
C.
He is not very interested in the topic.
D.
He is probably a good dancer.
【单选题】Why does Doctor Green break the rule for the man?
B.
He is going on a vacation. going on a vacationgeneral offi form?udent card?
C.
He is unable to afford a full checkup. 听第7段材料,回答第8、9题。
【判断题】夜间单人外出, 应详细报告自己的去向 , 并要携带电源充足的照明和通信器材,以保持随时联系 。
【简答题】He acted very politely in the presence of her.
【单选题】数控编程下列G代码中只限定在被指定的程序段中有效的是()。