What is this discussion mainly about？
A. Growing plants without soil
B. Mixing nutrients in water
C. Identifying chemicals in soil
D. Solving problems in the water
What is the discussion mainly about？
A. The life of author Jonathan Swift
B. A narrative of the fourth voyage of Gulliver
C. A description of the Houyhnhnms
D. The literature of the 1700s
What was the place like where Cather grew up？
A. It was cold, plain and without a church.
B. It was a colorful world of wild flowers.
C. It was like a German Christmas card.
D. It was vast, open, fiat and wild.
This passage is mainly about
A. English park scenery.
B. English cultivation of land.
C. natural view of England.
D. English farming culture.
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