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问题 单项选择题

猪全身皮肤呈弥漫性红色、淋巴结淤血，皮下脂肪和体腔内脂肪呈灰红色，以及肌肉组织色暗，较大血管中有血液滞留的（）。

A.抛弃

B.低价卖出

C.高温处理后出厂

D.连同内脏做非食用或销毁

答案

参考答案：D

单项选择题

下列心电图表现，属于被动性异位心律的是（）

A.房性早搏

B.心房颤动

C.心室颤动

D.阵发性心动过速

E.交界性逸搏心律
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单项选择题

Optimism is the art of always seeing the glass half full (1) half empty, finding something positive in even the most (2) of situations and last but not least the ability to expect the best even if the chances are (3) . It enables you to try new things, deal with failure as a learning experience (4) a stopping point. In general optimism gives you a reason to live. The world would be a better place if it was full of optimism, (5) unfortunately the trend in today’s youth is (6) the opposite way. Today it is (7) to be pessimistic. One could spend hours discussing how we arrived at this point, (8) our youth refuses to smell the roses and instead prefers to (9) themselves on their own pessimistic (10) .

Optimism is not an (11) gift but rather a learned behavior (12) . Like most behaviors optimism is best learned by watching examples, (13) you. The first step in creating a generation of people with a positive outlook on life, is to (14) life on the bright side yourself. (15) it would be wrong to (16) your child from all negativity, it is important that you are not the (17) of doubts and worries. Finding something positive in a negative situation needs to be (18) Show how to make the best of things by always (19) the positive, by encouraging your child after a(n) (20) and by explaining over and over that failure is just a part of progress.

9（）

A.celebrate

B.choke

C.linger

D.repress
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