[名词解释]物质流

The human brain contains 10 thousand million cells and each of these may have a thousand connections. Such enormous numbers used to discourage us and cause us to dismiss the possibility of making a machine with human-like ability, but now that we have grown used to moving forward at such a pace we can be less sure. Quite soon, in only 10 or 20 years perhaps, we will be able to assemble a machine as complex as the human brain, and if we can we will. It may then take us a long time to render it intelligent by loading in the fight software(软件) or by altering the architecture but that too will happen.
I think it certain that in decades, not centuries, machines of silicon(硅) Will arise first to rival and then exceed their human ancestors. Once they exceed us they will be capable of their own design. In a real sense they will be able to reproduce themselves. Silicon will have ended carbon’s long control. And we will no longer be able to claim ourselves to be the finest in
A. intelligent robots
B. a chemical element
C. an organic substance
D. human beings

A. If it doesn’t rain
B. that the plow can’t even break the soil
C. I knew there would be a shower
D. It did rain last month,
E. Didn’t you know there’s a thunderstorm today
F. It’s really bad.
G. What’s going on
H. I think so.
Sally: I think a drought has set in. It hasn’t rained a drop for months.
Ethan: (56) too, but didn’t it rain last month
Sally: (57) but the rainfall was only half the monthly average.
Ethan: Oh. That bad!
Sally: That’s right. (58) I’m really concerned though not panicked yet.
Ethan: I don’t blame you. The pastures have browned out even before the summer hasn’t arrived.
Sally: Yeah, and the soil has been baked so hard (59) .
Ethan: Looks like it’s going to be an ongoing thing that would get worse each day.
Sally: Yeah. (60