2017年4月29日SAT官方每日一题---写作.

　　为了让我们更好的适应sat考试，sat官网每天都会有sat官方每日一题，下面是小编为您整理的2016年4月sat官方每日一题，是关于写作的，让我们一起来看一看这道写作题吧。

　　After reading the passage, choose the answer to the question that most fectively improves the quality of writing in the passage or that makes the passage conform to the conventions of standard written English. Sometimes the question will include a "NO CHANGE" option. Choose that option if you think the best choice is to leave the relevant portion of the passage as it is.

　　Some plant pathologists have turned to genetic engineering to devise new ways of responding to botanical diseases. Plant pathologist William Powell, for instance, teamed up with forest biologist Chuck Maynard to restore North America's population of American chestnut trees, which was decimated in the early 1900s by a fungus known as chestnut blight. A fungus, C. parasitica, contributes to the growth of cankers on the trees' trunks; these cankers, in turn, prevent trees from transporting water from their roots to their branches and leaves. To render American chestnut trees resistant to the blight, Powell and Maynard experimented with altering the genetic makeup of the trees. The resultant genetically engineered trees are called Darling 4 American chestnut trees, and during the first 15 weeks after infection with chestnut blight, they grow cankers that are much smaller than those that grow on American chestnut trees.

　　Select an answer

　　(A) NO CHANGE

　　(B) messed about with

　　(C) tried some stuff out for

　　(D) embarked on a journey of discovery regarding

　　答案：A

　　解析：

　　Choice A is the best answer because it maintains the formal, academic tone of the rest of the passage.

　　为了让我们更好的适应sat考试，sat官网每天都会有sat官方每日一题，上面是小编为您整理的2016年4月sat官方每日一题，是关于写作的，让我们一起来看一看这道写作题吧。