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问题 单项选择题

在UML的通用机制中， (45) 用于把元素组织成组； (46) 是系统中遵从一组接口规范且付诸实现的物理的，可替换的软件模块。

A．包

B．类

C．接口

D．对象

答案

参考答案：A

问答题

The heads of some of Russia’s most prestigious educational establishments yesterday admitted that students use surrogates (代理人) to gain entry to top institutes, whose qualifications are a passport to lucrative jobs.
The surrogate students are only the latest symptom of an epidemic of corruption that has gripped the Russian higher education system. A report published this week by the Ministry of Education and Moscow’s Higher School of Economics (HSE) showed that more than $300m was paid in bribes to enter the country’s educational establishments last year. A direct bribe to lecturers to enter an institution can be up to $30000 for a top law faculty, the HSE estimates.
"In our school alone this spring we caught four impostors who were attempting to sit the entrance tests in place of others, " said Grigory Kantorovich, deputy head of the HSE. "Those were not isolated cases; it’s a whole, specialised business. "
Such corruption is multiplied by a burgeoning market in coursework and diplomas written by teachers and lecturers, which can be bought over the Internet.
A police spokesman said there was no dedicated unit for tackling corruption in education, but individual cases were investigated if evidence was handed over.
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单项选择题

患者，男性，50岁。口腔腭部破溃疼痛1个月余。有反复发作史。口腔检查：软腭部一个大而深的溃疡，直径1.5cm，似弹坑状，周边红肿隆起但整齐，底部微凹，表面有假膜，可见腭垂有缺损。初步诊断为

A．癌性溃疡

B．结核性溃疡

C．创伤性溃疡

D．复发性重型阿弗他溃疡

E．坏死性涎腺化生
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