Number theory is rich in problems of an especially (i)____ sort: they are tantalizingly simple to state but (ii)____ difficult t

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问题 Number theory is rich in problems of an especially (i)____ sort: they are tantalizingly simple to state but (ii)____ difficult to solve.

选项 A、cryptic…deceptively
B、spurious…equally
C、abstruse…ostensibly
D、elegant…rarely
E、vexing...notoriously

答案E

解析 空格(ii):
-方程等号:but表示转折,前后逻辑取反。
- 强词和对应:空格(ii)+difficult和tantalizingly simple(诱人地简单)构成反义重复,空格(ii)修饰difficult,体现“困难”。deceptively欺骗性地,equally相等地,ostensibly表面上地,rarely几乎不,notoriously臭名昭著地。deceptively/ostensibly/rarely+difficult实则体现“不难”,与simple矛盾。选项B和E合适。
空格(i):
- 方程等号:冒号,同义重复。
- 强词和对应:difficult指向空格(i),根据冒号取同,体现“困难”,所以空格填入一个负向词。cryptic神秘的(对),spurious假的(错),abstruse深奥难懂的(对),elegant优雅的(错),vexing恼人的(对)。综合空格(ii),答案选E。
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