In 1977, a dead author of detective stories saved the life of a 19-month-old baby in a most unusual way. The author was Agatha Christie, one of the most successful writers of detective stories in the world.

In June 1977, a baby girl became seriously ill in Qatar, near Saudi Arabia. Doctors were unable to _31_the cause of her illness, so she _32_ to London and admitted to Hammersmith Hospital, where specialist help was _33 _. She was then only half-conscious(半昏迷) and on the “Dangerously Ill” list. A team of doctors hurried to _34_the baby only to discover that they,  35_, were puzzled by the very unusual symptoms. While they were discussing the baby’s case, a nurse asked to __36 to them.

   “Excuse me,” said nurse Marsha Maitland, “_37_ I think the baby is __38_ from thallium poisoning.”

   “_39 _ makes you think that?” Dr. Brown asked. “Thallium poisoning is extremely _40_.”

   “A few days ago, I was reading a novel called A Pale Horse __41__ Agatha Christie,” Nurse Maitland explained. “In the book, somebody uses thallium poison, and _42_ the symptoms are _43_. They are exactly the same as the baby’s.”

   “You’re very observant and you may be right,” another doctor said. “We’ll _44_some tests and find out _45_ it’s thallium or not.”

The _46_ showed that the baby had  47_ been poisoned by thallium, a rare metal used in making optical(光学的) glass. _48_ they knew the cause of illness, the doctors were able to give the correct treatment. The baby soon _49_ and was sent back to Qatar. Inquiries(调查)showed that the poison __50_ from an insecticide(杀虫剂)used in Qatar.

A. describe         B. diagnose                C. discover            D. discuss

A. flew                   B. sent                      C. went                 D. was flown

A. inexpensive         B. important              C. available           D. impossible

A. examine             B. see                           C. look after          D. cure

A. too                     B. either                    C. often             D. never

A. refer                      B. turn                      C. speak                D. belong

A. and                    B. so                            C. as                     D. but

A. coming               B. suffering               C. tired                 D. dying

A. Who                         B. How                        C. What                D. Which

A. rare                     B. serious                     C. clear                 D. dangerous

A. in                     B. on                           C. by                    D. about

A. all                    B. some of                    C. one of               D. both

A. drawn                  B. broadcast               C. announced         D. described

A. make up                  B. carry out               C. get through     D. deal with

A. that                         B. how                         C. what                 D. whether

A. words                  B. tests                      C. examination       D. book

A. indeed              B. actually                 C. probably           D. never

A. As long as         B. As for as               C. Once                 D. If

A. died                    B. got injured         C. recovered          D. got ill

A. must come       B.should come     C.might have come D.can’t have come

The requirements for high school graduation have just changed in my community. As a result, all students must   36   sixty hours of service learning,   37   they will not receive a diploma(文凭).    38    of service learning include cleaning up a polluted river, working in a soup kitchen, or tutoring a student. During a service experience, students must keep a journal and then write a   39   about what they have learned.

Supporters state that there are many   40  of service learning. Perhaps most importantly, students are forced to think   41 their own interests and become aware of the needs of others. Students are also able to learn real-life skills that   42  responsibility, problem-solving, and working as part of a team. Finally, students can explore possible careers 43   service learning.

For example, if a student wonders what teaching is like, he or she can choose to work in a primary school classroom a few afternoons each month.  44   there are many benefits, opponents (反对者) point out problems with the new requirement. First, they   45  that ,because service learning is time-consuming, students spend   46   time studying the core subjects. Second, they believe that forcing students to work without   47   goes against the law.

In my view, service learning is a great way to   48   to the community, learn new skills, and explore different careers.  49   , I don' t believe you should force people to help others – the  50   to help must come from the heart. I think the best solution is one that gives students choices. Choice encourages both freedom and responsibility.

A. spend             B. gain              C .complete         D. save

A. and              B. or                 C. but             D. for

A. Subjects          B. Ideas              C. Procedures       D. Examples

A. diary             B. report            C . note             D. notice

A. courses           B. benefits           C . challenges        D. features

A. beyond           B. about             C. over             D. in

A. possess           B. apply             C. include           D. develop

A. through           B. across            C. of               D. on

A. So               B. Thus             C . Since            D. While

A. argue             B. doubt            C . overlook          D. admit

A. much             B. full              C . less              D. more

A. cost              B. pay              C. care              D. praise

A. contribute          B. lead             C. attend            D. belong

A. Therefore          B. Besides           C. but              D. However

A. courage           B. desire             C. emotion          D. spirit

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