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问题 单项选择题

若了前面的一个历史记录，在下列哪个选项被选中的时候，这个历史记录后面的历史记录不受影响（）

A、自动创建的第一个快照

B、允许线性历史记录

C、允许非线性历史记录

D、允许两次线性插值运算

答案

参考答案：C

阅读理解

阅读小天地。

      Hello, I'm Simon. I am eleven. And this is my friend Sarah. She is very cute. We like music. And we like

sports, too. Sarah doesn't like math. Her uncle is a math teacher.

      Now we are in our new classroom. It is very big. You can see two blackboards and a computer. There are

twenty-five desks and fifty chairs. They're yellow. Our classroom is nice and clean. We like it very much.

根据短文内容，判断下列句子的正(√)误(×)。

( ) 1. Sarah is a girl.

( ) 2. We like sports.

( ) 3. My uncle is a math teacher.

( ) 4. There are fifty desks in the classroom.

( ) 5. The chairs are yellow.
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单项选择题

急性心衰饮凌心肺证的特点是（）

A.心悸、气短，肢倦乏力，动则加剧，神疲咳嗽

B.心悸、气短，肢倦乏力，动则汗出，自汗、盗汗

C.喘促气急，痰涎上涌，咳嗽，咳粉红性泡沫痰

D.咳嗽痰多，倚息不得平卧

E.心悸、气短，肢倦乏力，胸胁满闷作痛
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