181．I spent ages trying to solve the problem，but gave up feeling hopeless for the coming future.（in despair）

182．Read the text of each conversation and then match each conversation with the relationship between the speakers.

A.mother and son B.hostess and guest C.teacher and student D.interviewer and interviewee

（Text 1）
W：Was I supposed to give the presentation about festivals and celebrations this week？
M：Probably，it's your turn.
They are. .
（Text 2）
W：John，what are you doing on your computer？Don't you remember your promise？
M：This is not a game.It's only a crossword puzzle that helps increase my vocabulary.
They are .
（Text 3）
M：Hello，Sang Lan.I'm from China Daily.Can you introduce something about yourself to us？
W：Of course.I'm glad to have a chance to talk with you.
They are .
（Text 4）
M：If you'll excuse me，I really should be off now.
W：Not yet surely.Have another drink at least.
M：No，thanks.And thank you very much for the delicious meal.
W：Thanks for coming.
They are .

183．Once upon a time，there was a large mountainside，（1）an eagle's nest rested.The eagle's nest contained 4 eagle eggs inside.One day，an earthquake rocked the mountain，（2）（cause） one of the eggs to roll down to a chicken farm，（3）（locate） in the valley below.The chickens knew they must protect and care for the eagle egg，so an old hen volunteered to do it.
   Several days （4）（late），the eagle egg hatched and a beautiful eagle was born.（5）（sad），however，the eagle was raised to be a chicken.Soon the eagle believed he was nothing more than a chicken.The eagle loved his home and family but （6）（he） spirit cried out for more.
   One day，the eagle looked to the sky and noticed a group of mighty eagles soaring（高飛）in the sky."Oh，"the eagle cried in （7）（amaze），"I wish I could soar like those birds."The chickens burst into laughter，"You cannot soar like those.You are a chicken and chickens do not soar."
   The eagle continued staring （8）real family up above，dreaming that he could be like them.Each time the eagle talked about his dream，he （9）（tell） it could not be done.That was （10） the eagle learned to believe.As a result，the eagle stopped dreaming and continued to live his life as a chicken.Finally，after a long life as a chicken，the eagle passed away.

184．It was great fun walking along the streets，enjoying the relaxing atmosphere.
Definition
Sentence

185．The touchstone was a small pebble（鵝卵石） that could turn any common metal into pure gold.It's said it was（1）among thousands and thousands of other pebbles that looked（2）like it.As to how to find it，the（3）was this：the real stone would feel warm，while（4）pebbles are cold.
（5），a man sold his few belongings，bought some simple supplies，camped on the seashore，and began（6）pebbles.
  He knew that if he picked up ordinary pebbles and threw them down again because they were（7），he might pick up the same pebble hundreds of times.So，when he felt one that was cold，he threw it into the（8）.He spent a whole day doing this but none of them was the touchstone.Yet he went on and on this way.Pick up a pebble.Cold—throw it into the sea.Pick up（9）.Throw it into the sea.
   The days stretched into weeks and the weeks into months.One day，however，about mid-afternoon，he picked up a pebble and it was warm.He threw it into the sea（10）he realised what he had done.He had（11）such a strong habit of throwing each pebble into the sea that when the one he wanted（12）he still threw it away.
   So it is with（13）.
   Unless we are（14），it tends to be easy to fail to（15）an opportunity when it is in hand and it's just as easy to throw it away.

（1）	A．staying	B．lying	C．hiding	D．mixing
（2）	A．exactly	B．sharply	C．especially	D．flexibly
（3）	A．secret	B．operation	C．response	D．principle
（4）	A．big	B．small	C．ordinary	D．false
（5）	A．However	B．Eventually	C．Therefore	D．Gradually
（6）	A．making	B．selecting	C．changing	D．testing
（7）	A．cold	B．warm	C．ugly	D．a(chǎn)ttractive
（8）	A．river	B．box	C．spot	D．sea
（9）	A．a(chǎn)nother	B．other	C．each	D．it
（10）	A．until	B．when	C．a(chǎn)fter	D．before
（11）	A．formed	B．stopped	C．changed	D．rejected
（12）	A．went down	B．came along	C．went against	D．came about
（13）	A．treasure	B．wisdom	C．virtue	D．opportunity
（14）	A．careful	B．smart	C．kind	D．energetic
（15）	A．recognise	B．bite	C．lose	D．hire

186．My brother cried when his team lost the most important game of the season.（in tears）

187．Make sentences based on the given words or expressions.
significant，congratulate

188．On the o of her daughter's wedding，she was fighting back tears as she spoke.

189．Read the sentences，underline the infinitives and divide them into groups according to their functions.
（1）One has to have 1，350 hours of flying experience to become an astronaut in China.
（2）I think one must be physically and mentally strong enough to become a qualified astronaut.
（3）Yang Liwei，the first Chinese astronaut to enter space，is admired a lot by us.
（4）Humans always wish to discover other planets that are suitable enough to support life.
（5）I have some books about space exploration for you to read.
（6）I hurried to the cinema，only to find the film The Wandering Earth was near its end.
（7）I hope I will have a chance to become an astronaut in the future.
（8）All the Chinese were glad to hear that Yang Liwei succeeded in entering space.

Attribute	Adverbial

190．An earthquake happened in 1906 and destroyed nearly half of the city.