某块SoundBlaster声卡是16位的，这里的“16位”是指 (11) 。
A．声道数为16
B．MIDI通道数是16
C．可以产生的音色数是216
D．声音采集最大量化精度是16位
参考答案：D
解析：[要点解析] 声卡的一个主要技术指标即处理数字声音信号的最大量化位数，早期的声卡可以实现8位的声音信号量化，称为8位声卡。目前的商用声卡及PC板载声卡均使用16位的声音信号量化精度，实现高质量的声音采样和回放。
| 阅读理解。 |
| A man was walking along the street when he saw a woman carrying a large box. It was half in and half out of her car. So the man went up and said, "The box looks very heavy. Let me give you a hand." "That's very kind of you," the woman said, "I'm having a lot of trouble with it. Maybe it stuck (卡住) in the car door." "Together we'll soon move it," the man said. "I'll get in and take the other end." And he got in the car. "Right," the man said. "I'm ready," and he began to push the box hard. For several minutes, the man and the woman tried to move the box. Soon they felt very tired. They rested for a moment. Then the woman said, "Let's try again. One, two, three!" They went on moving the box. At last, when they were exhausted, the man said, "I'm sorry, but I don't think there's any way to get it out of your car." "Get it out?" the woman cried. "I'm trying to get it in! You know?" |
| 1. Where did this story happen? |
[ ] |
| A. At a bank. B. In a shop. C. In the street. D. In the woman's car. |
| 2. Who got in the car to move the box? |
[ ] |
| A. The woman. B. The man. C. Both of them. D. Neither of them. |
| 3. The underlined word "exhausted" means "______" in Chinese. |
[ ] |
| A. 精疲力竭的 B. 激动的 C. 充满希望的 D. 沮丧的 |
| 4. Which of the following is TRUE about the story? |
[ ] |
| A. The man stuck in the car door. B. The woman asked the man for help. C. The man refused to help the woman. D. The woman tried to get the box into the car. |
| 5. What do you think of the man? |
[ ] |
| A. He is a helpful man. B. He looks very strong. C. He is funny and stupid. D. He likes to play jokes on others. |