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[单选题]
We are _______ at the rapid progress Mark has made in this semester.
A.distinguished
B.annoyed
C.astonished
D.scored
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A.distinguished
B.annoyed
C.astonished
D.scored
A.MHCⅠ类分子α1、α3功能区
B.MHCⅡ类分子α1、β1功能区
C.MHCⅠ类分子α3功能区
D.MHCⅡ类分子β2功能区
E.MHCⅠ类分子的β2m
A.直缓点(ZH)的桩号为(S+Ls)
B.直缓点(ZH)的桩号为(S-Th)
C.直缓点(ZH)的桩号为(S+Lc)
D.缓直点(HZ)的桩号为(S+Th)
E.缓直点(HZ)的桩号为(S+2Ls+LC-Th)
B.anywhere
C.where
D.somewhere
B.carefully
C.more careful
D.more carefully
A. make
B. have
C. avail
D. advantage
A.so that
B.so as
C.because
D.such that