Careers Officers ______ contact with young people after they leaveschool.
A. maintain
B. contain
C. obtain
D. detain
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Adam left suddenly, for no ______ reason.
A. parental
B. apparent
C. apparatus
D. apparel
The store recently ______ a drug testing policy for all new employees.
A. adapted
B. admitted
C. advocated
D. adopted
圆的画法有六种,分别是圆心+半径、()、两点圆、()、相切 相切 相切和()。
用“起点、圆心、角度”画弧时,“角度”指的是()的度数。