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
Uniform acceleration occurs ______ the rate of change remains the same over successive equal intervals of time.
A. according
B. if
C. with
D. under
The passage is focused on______.
A. career direction and the changing world of work in China
B. the positive influence of China's entry into WTO
C. the demand of society after China's entry into WTO
D. the importance of upgrading skills and qualifications in job hunting
微信支付 
支付宝支付