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請依下文回答第 36 題至第 38 題： The development of seawater agriculture has taken two directions. Some investigators have attempted to breed salt tolerance into conventional crops, such as barley and wheat. For example, Emanuel Epstein’s research team at the University of California at Davis showed as early as 1979 that strains of barley propagated for generations in the presence of low levels of salt could produce small amounts of grain when irrigated by comparatively saltier seawater. Unfortunately, subsequent efforts to increase the salt tolerance of conventional crops through selective breeding and genetic engineering─in which genes for salt tolerance were added directly to the plants─have not produced good candidates for seawater irrigation. The upper salinity limit for the long-term irrigation of even the most salt-tolerant crops, such as the date palm, is still less than five part per 1,000(ppt)─less than 15 percent of the salt content of seawater. Normal seawater is 35 ppt salt. Our approach has been to domesticate wild, salt-tolerant plants, called halophytes, for use as food, forage, and oilseed crops. We reasoned that changing the basic physiology of a traditional crop plant from salt-sensitive to salt-tolerant would be difficult and that it might be more feasible to domesticate a wild, salt-tolerant plant. After all, our modern crops started out as wild plants. Indeed, some halophytes─such as grain from the saltgrass Disticblis Palmeri─ were eaten for generations by native peoples, including the Cocopah, who live where the Colorado River empties into the Gulf of California.
【題組】37 According to the passage, which of the following plants will grow and produce crops when irrigated by seawater with over 5 ppt salt?
(A)Barley
(B)Wheat
(C)Disticblis Palmeri
(D)Date Palm

答案：登入後觀看
難度： 適中
1F
雷慕莎 大三下 (2016/06/02)
irrigate KK [ˋɪrə͵get] 灌溉
2F
Mmm 大一上 (2022/05/22)

The upper salinity limit for the long-term irrigation of even the most salt-tolerant crops, such as the date palm, is still less than five part per 1,000(ppt)
即使是最耐鹽的作物，如棗椰樹，長期灌溉的鹽度上限仍然低於千分之五（ppt）
→連最耐鹽的作物都無法生存在超過5ppt的環境

After all, our modern crops started out as wild plants. Indeed, some halophytes─such as grain from the saltgrass Disticblis Palmeri─ were eaten for generations by native peoples
畢竟，我們的現代作物最初是野生植物。 事實上，一些鹽生植物——例如來自鹽草 Disticblis Palmeri 的穀物——被原住民世代食用。
→Disticblis Palmeri 為鹽生植...


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請依下文回答第 36 題至第 38 題： The development o..-阿摩線上測驗