本期参考答案II版III. 1. according to 2. bumps 3. reasonable/natural 4. suffered 5. focus/center/concentrate on/pay attention toIV. 1. picture 2. sooner or later 3. unexpected 4. be expected 5. difference 6 ……

本期参考答案II 版：III. 1. increasingly short  2. cellphones      3... of the joy and enjoyment of doing so.本期参考答案II 版：III. 1. increasingly short  2. cellphones ……

CBBDA  6-10 DCABA  11-15 ACCBD  本期参考答案本期参考答案III版：III版：1. When he saw the surprises...834期参考答案834期参考答案IV版：IV版：Day 1 1-3 DBB Day 2 1-4 DDBCDay 1 1-3 DBBDay 2 1-4 DDBCDay 3 1-4 CABB Day 4 ……

outdoorsD. get their exam results上期参考答案【P3】ADB【P5】ADBE本期参考答案【P3】TTFTF【P5】BDD ……

和联系电话。本期参考答案和获奖同学名单将刊登在下下期。第415期参考答案：1. seller / salesman / shop assistant 2. bank clerk3. policeman 4 ……

世界”，邮件正文要写清你的省市、学校、班级、姓名和联系电话。本期参考答案和获奖同学名单将刊登在下下期。第417期参考答案：1. playing basketball 2. watching TV 3 ……

年5月22日前发邮件至lishufang@21stcentury.com.cn赢取精美小礼品吧！另外，在邮件主题栏要注明“单词世界”，邮件正文要写清你的省市、学校、班级、姓名和联系电话。本期参考答案和获奖同学名单将刊登在下下期。第421期参考答案：1. Australia 2. France 3. The United States 4. The United Kingdom 5 ……

本期参考答案II版：III. 1. trusted; 2. wore; 3. surprised; 4. advice/suggestion; 5. neededIV. 1. rules; 2. fashionable/trendy; 3. appearance/look; 4. turned; 5. choosing/picking; 6. believe; 7. uncertainty; 8 ……

本期参考答案I版：(一) 1. c 2. a 3. f 4. d 5. e 6. b(二) 1. I would appreciate it if you could lend me your books.2. One of the camel’s characteristics is its ability to live without water for a long time.3 ……

;本期参考答案本期参考答案II版：II版：III. Learning languages gives us the ability to build bridges with other people... on the couch, absorbed ______ her book.4. Judith lay on the couch, absorbed ______ her book.  参考答案 ……

. to assist/assisting  本期参考答案本期参考答案II版：II版：III. A friend recommended she check out... (assistance) his colleagues.参考答案：参考答案：1. is estimated; 2. employers; 3. releasing; 1. is estimated ……

. theoretical 4. are categorized; 5. theoretical   本期参考答案本期参考答案II版：II版：III. The author...) knowledge of teaching, but no practical experience.参考答案：参考答案：1. pioneering; 2. puzzled  3 ……

will keep his own diary away from his sister.D. He may have many things to laugh at his sister about.上期参考答案【P3】 ABB 【P5】 ACB本期参考答案【P3】1. a. with a dryer b. in the sun 2. It is a kind of fast lifestyle. 3 ……

@21stcentury.com.cn赢取精美小礼品吧！另外，在邮件主题栏要注明“单词世界”，邮件正文要写清你的省市、学校、班级、姓名和联系电话。本期参考答案和获奖同学名单将刊登在下下期。第413期参考答案：1 ……

.D. He will leave 99 percent of his wealth to his family. （参考答案见本期）上期参考答案【P3】 1. Yes, she is. 2. At the end of May. 3. She felt nervous. 4. It was about 10 meters high. 5. Yes, she did.【P5】BCA本期参考答案 ……