文档介绍：
高难度的英文单词

　　就题库中所含练****题之难度观之，无论运用何种选题策略，均以低难度题库之练****效果最正确，高难度题库之练****效果较差，此结果符合一般的看法。
　　Comparing the practice effect of the three item banks with different difficulties, the item bank with low difficulty shows significantly better effect than those with the moderate and high difficulty.
　　与此同时，她还在跳马工程上三夺世界冠军，并在竞赛中表演了自己的高难度跳马动作程菲跳。
　　She is also a three-time world champion on the vault, having performed one moveso difficult that it now bears her name.
　　一组人拿到的选项运用的是小字体低比照度(高难度条件)，而另一组人拿到的选项运用的是大字体高比照度(低难度条件)。
　　One group was given these options in a small, low-contrast font (high-difficultycondition) while a second group was given the same options in a larger, highcontrast font (low-difficulty condition).
　　事实上，编写一个操作系统是被许多人认为是一件具有很高难度的编程任务。
　　In fact, writing an OS is considered the most difficult programming task by manypeople.

　　奥康纳说，这个发觉说明白那时当地人已经娴熟驾驭了进展如此高难度的捕获所须要的技术。
　　The find shows that the people living in the region had the sophisticated cognitive skills needed to haul in such a difficult catch, OConnor says.
　　他们做出各种高难度的动作和跳动来吸引观众们。
　　They executed difficult movements and jumps to impress the audience.
　　她经常挑战体操高难度动作。
　　She often challenges difficult movements.
　　2004年，圣叠戈加州大学科研人员做了一项试验，他们让受试者从事一些高难度的作业，并不断催促他们做快点，再快点，直到把受试者搞得不安大发脾气为止。
　　In a 2004 study at the University of California at San Diego, researchers irritatedpeople by giving them a difficult task then nudging them to go faster.
　　ESO收到了大约80份参赛作品(在Flickr 网上面你可以全部望见)，考虑到这项工程的高难度，就相当感人。
　　The ESO got about 80 entri