问答题

表面热处理是指仅对工件表面进行热处理以改变其组织和性能的工艺,一般可以分为__________和__________。



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问答题

Fill the blanks by selecting suitable words from the word bank. You may not use any of the words more than once.
 
When Roberto Feliz came to the USA from the Dominican Republic, he knew only a few words of English. Education soon became a __1__. "I couldn't understand anything," he said. He __2__ from his teachers, came home in tears, and thought about dropping out.
  Then Mrs. Malave, a bilingual educator, began to work with him while teaching him math and science in his __3__Spanish." She helped me stay smart while teaching me English," he said. Given the chance to demonstrate his ability, he __4__ confidence and began to succeed in school.
  Today, he is a __5__ doctor, runs his own clinic, and works with several hospitals .Every day, he uses the language and academic skills he __6__ through bilingual education to treat his patients.
  Roberto's story is just one of __7__ success stories. Research has shown that bilingual education is the most __8__ way both to teach children English and ensure that they succeed academically. In Arizona and Texas, bilingual students __9__ outperform their peers in monolingual programs. Calexico, Calif. , implemented bilingual education, and now has dropout rates that are less than half the state average and college __10__ rates of more than 90%.In E1 Paso, bilingual education programs have helped raise student scores from the lowest in Texas to among the highest in the nation.
[A] wonder  [B] acquired  [C] consistently  [D] regained     [E] nightmare
[F] native   [G] acceptance [H] effective    [I] hid           [J] prominent
[K] decent  [L] countless  [M] recalled    [N] breakthrough  [O] automatically

单项选择题

程序:class Animal(object): area='非洲'关于area说法错误的是( ) 。

A.area是Animal的类属性
B.area是Animal的私有属性
C.area可直接通过类名访问
D.area可通过类的实例访问