题目内容

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

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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

二氧化碳潴留对下列血管作用是

A. 皮肤血管收缩
B. 脑血管收缩
C. 睑结膜血收缩
D. 肺小动脉收缩
E. 广泛外周血管收缩

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