Our supplies had run ______and all we could do was wait.
A.
out
B.
in
C.
from
D.
on
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参考答案:
举一反三
【单选题】If the “new techniques” mentioned in line 31 were applied in studies of biological classifications other than bacteria, which of the following is most likely?
A.
Some of those classifications will have to be reevaluated.
B.
Many species of bacteria will be reclassified
C.
It will be determined that there are four main categories of living things rather than three.
D.
It will be found that true bacteria are much older than eukaryotes.
E.
It will be found that there is a common ancestor of the eukaryotes, archaebacteria, and true bacteria.