13. Mark your answer on your answer sheet.

答案：登入後查看
統計： A(21), B(78), C(6), D(0), E(0) #3823233

詳解 (共 1 筆)

#7328329
are these test tubes sterilized properly
A.the test was very difficult
B. yes according to the lab protocol
C. no the doctor is out today
0
0