I dream of standing on theplatform in the classroom and giving lessons to lovely boys and girls．题目和参考答案——青夏教育精英家教网—

题目内容

6．I dream of standing on theplatform （讲台） in the classroom and giving lessons to lovely boys and girls．

分析我梦想站在教室的讲台上给可爱的男孩子们和女孩子们上课．

解答答案是platform．本题考查语境中选用恰当的词或短语；platform n．讲台，平台；stand on the platform"站在讲台上"，故答案是platform．

点评翻译填空要在理解句子的结构和含义的基础上根据汉语意思选择恰当的词、短语或句型；同时注意所选词的形式变化．

练习册系列答案

17．Hepanicked（惊慌） and ran as fast as he could to safety．

14．To her surprise（令她惊讶的是），she found her little son can play the piano．

1．He made it clear with dignity that he was notresigning （辞职，退出） from active politics．

11．I think ________ impresses me about his painting is the colors he uses．（　　）

18．You ________ apologize to you mother for your rude speaking way．（　　）

15．HIV is a tricky virus that escapes typical immune responses．During a successful immune system response to a foreign body，white blood cells produce antibodies that target the foreign body．These antibodies then mark the foreign body for destruction by other immune cells．For the most part，HIV escapes these immune defenses，but rare individuals develop antibodies that effectively block the virus．Researchers are now showing that these antibodies can also act as treatments in other HIV patients．
HIV has several ways of escaping the immune response．Unlike most viruses，HIV specifically attacks a type of white blood cell that is critical to our immune system．During reproduction，the HIV virus also picks up many new mutations （变异），which often change it enough that any antibodies produced earlier during the infection no longer recognize it．
These rare antibodies can also keep the virus from infecting new cells，which could make them an effective treatment．In animal studies，injection of low concentrations of these antibodies could act as a vaccine （疫苗） and provide protection against infection．Injections can even control active infections when combined with additional antibodies that target other molecules （分子） on the HIV surface．These findings led to humans phase 1clinical trials to evaluate a specific antibody that targets HIV．This study revealed that a single injection of the antibody typically reduced the presence of HIV in the blood of patients who have viruses that were sensitive to the antibody．
After performing test-tube studies showing the effectiveness of the antibody，the researchers evaluated its safety in humans in a small trial．The study included two groups of participants：14uninfected individuals and 19individuals with an HIV-1infection．The researchers then tracked the clearance of the antibody by following its levels in the participants'blood．Consistent with previous studies，HIV-1infected individuals exhibited faster clearance of the antibody，with a half-life of 12.8days compared to 24.0days for uninfected participants．Despite the fast clearance，however，the antibody appeared to be effective．
Thirteen HIV-1infected participants with the highest levels of virus received the highest dose （剂量） of the antibody．Eleven of them showed a rapid decline in HIV levels．Tracking the infection through the first weeks after treatment revealed the evolution of multiple viruses that were no longer affected by the antibody．However，these new variants （变体） generally remained sensitive to antibodies targeting other virus surface molecules．
Overall，this investigation shows the safety of injections of antibody 10-1074in humans．Thus，researchers may be able to build a cocktail of antibodies that effectively block active HIV infections．

59．HIV escapes immune responses byC．
A．removing the foreign body
B．identifying the immune system
C．attacking a certain white blood cell
D．reproducing some effective antibodies
60．What does the underlined word"it"in Paragraph 2refer to？C
A．The immune system．
B．A type of white blood cell．
C．The HIV virus．
D．An antibody．
61．The purpose of the further study of antibodies is toD．
A．introduce a vaccine protecting humans against infection
B．confirm the reduction of HIV in the blood of the patients
C．track a faster clearance of antibodies in uninfected subjects
D．prove the safety and effectiveness of antibodies in humans
62．What can we infer from the passage？B
A．Antibodies remain ineffective against most HIV viruses．
B．Researchers feel optimistic about a new cure for HIV．
C．Researchers get contradictory findings from a series of studies．
D．Antibodies can evolve with HIV viruses from infected patients．

3．听第8段材料，回答第12至14题．
12．Why does the man think it is bad to take a taxi at first？
A．The traffic is heavy．
B．There're just a few suitcases．
C．The suitcases are not heavy．
13．How much time do the two speakers have to get there？
A．Fifty minutes． B．Fifteen minutes． C．One hour．
14．How do the two speakers probably go there at last？
A．By bus B．On foot C．By taxi．

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