1 . 词性转换
1. ________n.挑战；艰巨任务 vt.怀疑；向……挑战→challenging adj.有挑战性的
2. ________ vt.使糊涂；使迷惑→confusing adj.难以理解的；不清楚的→confused adj.糊涂的；迷惑的
3. ________ adj.（尤指外语）流利的；熟练的→fluently adv.流利地→fluency n.流利；流畅
4. ________ vi.& vt.毕业；获得学位 n.毕业生→graduation n.毕业
5. ________ vt.建议；推荐；介绍→recommendation n.推荐；建议
6. ________ n.前进；发展 vi.前进；发展 vt.发展；促进→advanced adj.高级的；高等的；先进的
7. ________ adv.显然；明显地→obvious adj.明显的
8. ________ adj.负责的；有责任的→responsibility n.责任；义务
9. ________ n.解决办法；答案→solve vt.解决

4 . Now, reduced energy supplies have led to more________ in the technology of new energy vehicles.

A．advances

B．traditions

C．behaviors

D．examples

5 . 词性转换
1. appreciate vt, 感激;欣赏→________n. 欣赏;感激
2. tend to倾向于，趋向于→________n. 倾向，偏好
3. recognition n. 认出;认识;承认→________vt. 认出，辨认出
4. effect n. 效应;影响;结果;效果→________ adj. 有效的，产生预期效果的
5. honour n. 荣誉→________ adj. 可敬的;品格高尚的
6. academy n. 研究院;学会→________ adj. 学业的，教学的，学术的
7. eventual adj. 最后的;最终的;结果的→________ adv. 最终;终于
8. promise v.许诺;承诺;答应;预示→________ adj. 大有希望的
9. wise adj. 充满智慧的;明智的→________ n. 知识，学问;智慧
10. advance n. 发展;进步→________ adj. 高级的

6 . One mistake will probably lead to another one. This is called a chain ______.

A．creature

B．solution

C．reaction

D．advance

7 . In 2017, a computer program named AlphaGo defeated Ke Jie, the best human Go player, which demonstrated an important __________ in AI systems.

A．adventure

B．advance

C．alarm

D．account

10 . Too much protein in the diet may_______ the aging process.

A．revise

B．admire

C．injure

D．advance