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We should think of _ old and _ sick.

A. a...a
B. the...the

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灵敏度是传感器在稳态下1对2的比值。

1是指传感器在输入量不变的情况下,输出量随时间变化的现象。

系统灵敏度越1,就越容易受到外界干扰的影响,系统的稳定性就越2。

I.Fill in the blanks with the words and phrases.1. Don’twithGod.2. One of the main concerns is and security.3.Wesupportthose who seek peace and .4. The story had an extensive among Americanreaders.5. The store will5% for cash payment.6.prices remain stable.7. A new general store has been built for the of theresidents.8. And speed is not their only .9. In case of call the police10. All of these could slow down any recovery.