The Sound and the Fury was written by______.
A. Mark Twain
B. Ernest Hemingway
C. F. Scott Fitzgerald
D. William Faulkner
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A conclusion can be drawn from the passage that______.
A. a nation should rely on itself to boost the new economy
B. developing countries need investment to boost the new economy
C. developed countries will always take advantage of the developing ones
D. natural resources will no longer be needed as raw materials in the new economy
关于竞争性抑制作用的特点叙述正确的是
A. 抑制剂结构与底物结构不相似
B. 通过共价键与酶的必需基团结合
C. 无法用透析和超滤等方法去除
D. 不与底物竞争同一酶的活性中心
E. 抑制荆结构与底物结构相似
According to the passage, what people need to do is to______.
A. find ways to make future access to the material possible
B. use more traditional material rather than digital one
C. archive digital publications instead of paper ones in libraries
D. preserve today's pervasive form of communication, e-mails
有关于DNA和RNA组成的叙述正确的是
A. 部分碱基不同、戊糖相同
B. 部分戊糖不同、部分碱基相同
C. 碱基和戊糖均有所不同
D. 所有碱基均相同、戊糖不同
E. 所有碱基都不同
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