According to the passage, an active noise-cancellation system______.
A. contains noise rather than negates it
B. eliminates noise rather than muffles it
C. deflects noise rather than baffles it
D. holds noise hack rather than stifles it
查看答案
An anesthetist should be present throughout the operation, in case______.
A. the patient might die
B. a surgeon might need the anesthetist to give some medicine to calm him down
C. the patient hadn't been given an anesthetic deep enough
D. the anesthetist didn't know the process of the operation
A．cast lightB．declaredC．shownD．denied
A. cast light
B. declared
C. shown
D. denied
Which of the following statements is true according to the passage？
A. Doctors including anesthetists would not buy any awareness monitor even if it is accurate.
B. Anesthetists should catch up with any new surgical technique.
C. Not until recently have scientists known exactly how anesthetics work.
D. Medical staff are fully aware of what kind of qualifications an anesthetist should have.
A．With a view toB．Because ofC．With the intention ofD．In spite of
A. With a view to
Because of
C. With the intention of
D. In spite of
微信支付 
支付宝支付