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
The texture of the soil depends on the
relative amounts of different-sized particles that combine to make up the soil.
These particles can be as large as stone and gravel or as small as
clay. A typical clay soil is composed of approximately 60 percent actual clay, 20 percent silt, and 20 percent sand. The particles in a sandy soil are so fine that it tends to be compact and interferes with the oxygen supply for plant roots. Water has trouble entering this impervious soil, and runoff is very common during rainfalls. A typical light sandy soil is composed of approximately 70 percent sand, 20 percent silt, and 10 percent clay. The particles in a sandy soil are comparatively large, permitting water to enter the soil and to pass through it so quickly that it often carries nutrients with it and dries out very rapidly. The texture of A. other clay soils retain less water B. other clay soils have smaller particles C. adobe soil has had organic material added to it D. adobe soil is found mostly in dry climates 我来回答: 提交
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