2 . 词性转换
1. immediately→ [adv.] 立即，马上 conj. 一……就 ________ [adj.] 立即的;直接的
2. concentrate→ [vi.] & [vt.]集中(注意力、思想等);全神贯注 ________→ [n.] 专心，专注;集中concentrated→ [adj.] 全神贯注的;集中的
3. extreme→ [adj.] 极端的;严重的 [n.] 极端的感情(或境况、行为方式等) ________→ [adv.] 极端地;非常________→ [n.] 极端主义者;过激分子
4. effect→ [n.] 效果，作用;影响 ________→ [adj.] 有效的________→ [adv.] 有效地;实际上________→ [n.] 效率;有效性
5. prove→v. 后来被发现是 [vt.] 证明，证实 ________→ [n.] 证据，证明
6. slightly→ [adv.] 稍微，略微 ________→ [adj.] 轻微的;细小的 ________→ [n.] 些微，少许
7. nutrition→ [n.] 营养________→ [adj.] 有营养的 ________→ [adv.] 营养地，________ [n.] 营养学家
8. function [vi.] 起作用，正常工作，运转 [n.] 作用，功能，职能 ________ [adj.] 实用的;功能的   ________→[adv.] 功能地;职务上地
9. energetic→ [adj.] 精力充沛的，充满活力的________ [n.] 能量;精力________→ [adv.] 精力充沛地;积极地
10. frightened→ [adj.] 害怕的，惊吓的，受惊的________→ [n.] 惊吓;恐怖________→ [adj.] 令人惊恐的，骇人________→ [adv.] 吓人地，令人恐惧地

4 . 睡眠不足的学生在课堂上往往难以集中注意力。(suffer)(汉译英)

10 . 根据段落语义, 从下面方框中选择恰当的单词并以正确的形式填入空格中。

attitude       forgive       concentrate       debate       determine    economy       lecture       observe            senior             solution

I have many good teachers at     1     high school, among whom my favorite teacher is Miss Li, our English teacher. Her     2     are interesting and amazing, so I can always     3     in class. Sometimes she organizes     4     in which we are supposed to     5     problems like environmental pollution or     6    downfall, and then work out possible     7    . Her creative teaching stirs up our     8     to be active thinkers and hold a responsible     9     towards the world. While Miss Li is kind and enthusiastic, she is strict with us—cheating in exams will never be     10    !