心尖搏动减弱表示心脏收缩功能不全。
要到微信小程序或APP查看答案哦。
实在点不开答案，可以分享到微信，
在微信里面查看答案。
APP具体操作流程为：
| Read and write the correct words．(写出下列单词的相应形式。) | |
| 1．short(对应词) ______ 3．write（同音词）______ 5．America(形容词)______ | 2．bigger(原级) ______ 4．go(对应词) ______ 6．busy(比较级) ______ |
完形填空（共15小题；每小题1分，计15分） 阅读下列短文，从文后各题所给的四个选项中选出一个最佳答案。 Do you know how to study __1__ and make your study more effective (有效的)? We all know that Chinese students usually study very hard for long __2__, This is very good ,but it doesn’t__3__a lot ,for an effective student must have enough sleep ,enough food and enough rest and __4__. Every day you need to go out for a walk or visit some friends or some nice places. It’s good for your__5__. When you return __6__your studies, your mind will be refreshed(清醒)and you’ll learn more__7__study better. Psychologists (心理学家) __8__ that learning takes place this way. Here take English learning __9__ an example. First you make a lot of progress（进步）and you feel happy. __10__ your language study seems to stay the same. So you will think you’re learning nothing and you may give __11_. This can last for days or even weeks, yet you __12__ give up, and at some point your language study will again take another big __13__. You’ll see that you really have been learning all along. If you get enough sleep, food, rest and exercise, studying English can be very effective and __14_ . Don’t give up along the way. Learn __15__ ,you are sure to get a good result(结果).
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下列哪些部位已肯定有多巴胺受体
A．黑质纹状体
B．肾及肠系膜血管
C．延脑催吐化学感受区
D．脑室导水管周围灰质
E．延脑呼吸中枢
硬膜外麻醉最严重的并发症是：
A．神经损伤
B．硬膜外腔出血
C．硬膜外腔感染
D．穿破硬膜
E．全脊椎麻醉
创意除了新，还必须（）。
A.令人眼前一亮
B.有效
C.异想天开
D.得到他人的支持