would you like to _ __ the activity on weekends?[ ]
A. take part in
B. join
C. join in
答案:A
Mr Johnson _______ a child at the start of the 1950s. [ ]
A. is
B. are
C. was
D. were
本患儿最先采取的急救措施应是
A.胸外心脏按摩
B.气管插管
C.面罩给氧
D.静脉注射碱性药物
E.应用呼吸中枢兴奋剂