TOEFL Reading: ETS-TOEFL阅读机经 - E2VGB65B2XF3UWRDL$

According to paragraph 2, which of the following is true about "strip cropping" A. It increases crop yields annually. B. It forces farmers to plant crops that absorb less water and fewer nutrients from the soil. C. It requires the use of shelterbelts. D. It prevents wind erosion and allows moisture to collect on sections of land left unplanted.