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列举三种智能手机用到的操作系统。

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B1U7Summary of Text AWhen honesty disappearsHonesty, as a core value of society, is vanishing from our social life. As can be known from numerous accounts, travelers 1）__ off so many towels last year that it cost a major hotel chain $ 3 million to replace them, whereas politicians in many countries get used to demanding 2) _. But the worst of all is the academic 3) _ amongst today’s students who are tomorrow’s leaders.If that is indeed the case, what is behind it? The critical importance of a university degree may be the fuel of cheating in academic 4) __. The task of writing term papers, 5) _ as a source of frustration, may also worsen the problem. But the foremost factor is easy or free access to the Internet. With the Internet handy, all cheaters have to do is to 6) _ the appropriate website.To cope with the plague of cheating, universities around the globe now adopt anti-plagiarism 7) as well as very strict policies. Any student who is caught cheating in any way, for example, will be 8) from school. But the best cure for the plague is the keen 9) _ that we must trust each other. Without mutual trust, ordered society would 10) ____ into chaos. And without mutual trust, the future of our society will have nothing to depend on for harmony and fairness.

B1U7 Summary of Text BRays of hope in rising rudenessRude deeds are becoming increasingly common. Faced with rudeness in public, most people 1) ___ it, or mind their own business, or get out of the way. It is generally 2) _ around the world that the inhabitants of large cities are ruder than their fellow citizens from smaller towns or the countryside. What are the reasons behind it? Some experts say that the trend began decades ago when people became resistant to 3) values and manners.Some people blame 4) _ modern lifestyles for contributing to a society that has little time to be polite. Others find that stress also plays a role in incidents of 5) _ behavior and is becoming strikingly common. Rudeness has many forms. Beside verbal 6) ____, people tend to be violent. There is disagreement as to whether the situation is improving or not. Many see little hope for a 7) _ in today’s rude behavior. Others are feeling more hopeful.Nowadays, more people are 8) ___ their time for community projects; also, donations of goods and money to charities have increased. These acts of kindness would have a 9) _ effect on others and would help to reduce the stress in society. Let’s hope this optimistic view 10) _____ and brings a better, brighter world for us all.

下列不属于β-内酰胺类抗生素的药物是

A. 青霉素钠
B. 头孢克肟
C. 阿莫西林
D. 罗红霉素

属于氨基糖苷类抗生素的药物是

A. 硫酸链霉素
B. 阿奇霉素
C. 四环素
D. 红霉素