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问题 填空题

实验室要严格按照规定的用量取药，如果没有说明用量，就应该取最少量，即液体用 ______mL，固体只要盖满 ______．

答案

使用药品时要遵循不污染、节约的原则，如果没有说明用量，就应该取最少量，但如果太少也不行，实验效果不明显，影响实验结果的判断．

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单项选择题

请根据下面短文回答第11～15题：
Reading for pleasure is the easiest way to become a better reader in English. It is also the most important way.
Some students say they don’t want to read for pleasure. They say they want to use their time to learn the rules of the language and new words. They say that pleasure reading is too easy.
Many experts(专家)say pleasure reading is very important for learning English. Dr. Stephen Krashen, a famous expert on learning languages, says that pleasure reading helps you learn many important things about English. Students learn more grammar and more words when they read for pleasure. They also learn more about good writing.
Dr. Krashen tells us that pleasure reading helps each student in a different way. Each student needs to learn something different. Pleasure reading makes it possible for each student to learn what he or she needs.
Reading for pleasure is not the same as studying. When you read for pleasure, you choose your own books, and you don’t have to remember everything. There are no tests on your pleasure reading books. Pleasure reading will help you:
—learn how English speakers use English
—read faster in English
—find examples of good writing in English
—learn new words
—learn about the cultures(文化)of English speakers

When you read for pleasure, ______.
[A] you must read very fast
[B] you can read your favorite books
[C] you must remember many new words
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单项选择题

故障处理是嵌入式系统架构过程中需要重点关注的内容之一。通常，嵌入式系统故障分为硬件故障、应用软件故障和操作系统故障3类。硬件故障一般不包括______。

A．CPU资源枯竭
B．存储器访问错误
C．定时器计数错误
D．MMU配置错误
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