单项选择题
A.constructed B.contracted C.constituted D.contributed
Doctors hope to（）a human heart into the patient within ...
单项选择题Doctors hope to（）a human heart into the patient within the next few days.
A.transfer B.transform C.transplant D.transport
The tension（）as the guest of honor was about to announc...
单项选择题The tension（）as the guest of honor was about to announce the winner.
A.mounted B.accented C.climbed D.raised
How to dispose （） the nuclear waste is a pressing probl...
单项选择题How to dispose （） the nuclear waste is a pressing problem for scientists and politicians alike.
A.of B.with C.through D.behind
