This medicine is （).A. efficientB. effectiveC. efficiencyD. effect

Postal services generally are not as efficient in this regard. {A; B; C}A. 通常说来，

Please prepare the medicine for me according to this （) .A. prescriptionB. description

It is reported that this medicine is______ against lung cancer.A．economicB．easyC．expensive

What is the main idea of this passage？A．The progress of medicine has improved the health o

The medicine ______ just these patients in this hospital is a kind of special drug.A．with

Scientists say it may be five or ten years ______ it is possible to test this medicine on