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
查看答案
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.
What has taken place in the Great Plains grasslands during the last century？
A. The average annual rainfall has risen and fallen several times
B. Large parts of the prairie have been converted to agricultural use
C. Melting glaciers have formed numerous depressions in the soil
D. Scientists have transformed the region into one large carbon sink
微信支付 
支付宝支付