[单项选择]“王泽不流，则奸生于下”中“流”的意思是（）
A. 流动
B. 传播
C. 分布
D. 流变
E. 颂传

某年夏季，某县中心小学47名学生相继出现剧烈呕吐、上腹部剧烈疼痛、腹泻等症状，少数患者有低热。调查得知发病学生在当天上午均吃过学校供应的课间餐（外购的奶油蛋糕），未吃者不发病患者发病的潜伏期最短为1小时，最长为6小时

W: It’s well-known science fiction plot to freeze a body and bring it back to life years later.
However, this may no longer be so far from the truth. Joining us from our Cardiff studio is Professor Andrew Morgan, who’s been doing some research into this subject. Professor Morgan.
M: Yes, well, I’ve been looking into the ability of certain animals to freeze themselves for a certain amount of time, and then to come back to life when the circumstances around them change. And, what I’ve been working on over the past two years is the particular process that enables them to do this.
W: What have you actually discovered
M: I think it’s a particular chemical in the animals’ bodies which begins to work under certain circumstances. And I’m now experimenting with this chemical to see if I can get other animals that wouldn’t normally be able to freeze themselves to be able to do this.
W: Have you had any
A. It can be used to prolong everyone’s life.
B. It can help find cures for terminal illnesses.
C. It can cure cancer and Aids.
D. It can help freeze people with terminal illnesses and bring them back to life when the cure appears.

Paper is different from other waste produce because it comes from a sustainable resource: trees. (21) the minerals and oil used to make plastics and metals, trees are (22) . Paper is also biodegradable, so it does not pose as much threat to the environment when it is discarded. (23) 45 out of every 100 tonnes of wood fibre used to make paper in Australia comes from waste paper, the rest comes directly from virgin fibre from forests and plantations. By world standards this is a good (24) since the world-wide average is 33 percent waste paper. Governments have encouraged waste paper collection and (25) schemes and at the same time, the paper industry has responded by developing new recycling technologies that have (26) even greater utilization of used fibre. (27) , industry’s use of recycled fibres is expected to increase at twice the rate of virgin fibre over the coming years.
Already, waste paper (28)
A. consumes
B. consults
C. constructs
D. constitutes