某农场棉花生产中肥料成本的计划数和实际数如下表：

下列因素中，引起肥料成本超支的因素是( )。

A:肥料单价 B:播种面积 C:单位面积施肥量 D:以上都是

某农场棉花生产中肥料成本的计划数和实际数如下表：

采用因素分析法分析每个因素对肥料成本变动的影响程度时，正确的替代是( )。

A:单位面积施肥量x播种面积X单价 B:单位面积施肥量x单价x播种面积 C:播种面积x单价x单位面积施肥量 D:播种面积x单位面积施肥量x单价

肥胖,代谢综合征,2型糖尿病及其并发症之间存在着逐渐发展的关系。

与肥胖有关的因素不包括

A:肥胖者机体组织对胰岛素的敏感性下降 B:脂肪细胞可分泌大量炎症因子 C:炎症因子可能使胰岛素在靶细胞中的信号传导功能下降 D:肥胖是2型糖尿病的危险因素 E:运动减肥后组织胰岛素敏感性不增加

女孩，9岁，体重38kg，身长140cm，平时喜吃肥肉和甜食，不爱运动，无其他继发性疾病，拟诊为单纯性肥胖。

该患儿肥胖程度

A:超重 B:轻度肥胖 C:中度肥胖 D:重度肥胖 E:极重度肥胖

某男性患者，40岁，打球1 h后猝死。既往偶有黑蒙，在起立或运动时可出现眩晕。其母亲患肥厚型心肌病50岁去世，其姨母患肥厚型心肌病45岁去世。医师诊断是肥厚型心肌病、猝死。

肥厚型心肌病引起猝死的主要危险因素是

A:高血压 B:心律失常 C:室壁均匀肥厚 D:流出道阶差大 E:细胞内钙调节异常

某男性患者，41岁，打球1h后猝死。既往偶有黑蒙，在起立或运动时可出现眩晕。其母亲患肥厚型心肌病51岁去世，其姨母患肥厚型心肌病45岁去世。医师诊断是肥厚型心肌病、猝死。

肥厚型心肌病引起猝死的主要危险因素是

A:高血压 B:心律失常 C:室壁均匀肥厚 D:流出道阶差大 E:细胞内钙调节异常

           What we take from and give to the sea

    As long as we have been on earth, we have used the sea around us. We take from the ocean, and we give to it.

    We take fishes from the ocean – millions of kilograms of fish, every year, to feed millions of people. __1__. We take minerals from the ocean. One way to get salt is to place seawater in a shallow basin and leave it until it evaporates. __2__. Much gold and silver drift dissolved in the waters of the sea¹, too. But the sea does not give them up by simple evaporation. Other gifts from the sea are pearls, sponges and seaweed. Pearls become jewelry. __3__. Seaweed becomes food of many kinds – even candy, and ice cream – as well as medicine. 

    Believe it or not, fresh water is anther gift from the sea. We cannot drink ocean water. __4__. But ocean water becomes fresh water when the salts are removed. In the future, we will find ourselves depending more and more on fresh water from the sea.

    The sea gives us food, fertilizer, minerals, water, and other gifts. What do we give the sea? Garbage. __5__. Huge as it is, the ocean cannot hold all the water we pour into it, Dumping garbage into the ocean is killing off sea life2. Yet as the world population grows, we may need the sea and its gifts more than ever.

    We are finally learning that if we destroy our seas, we might also destroy ourselves. Hopefully, it is not too late.

词汇：

fertilizer/ "fɜːtɪlaɪzə / n．化肥

sponge /spɔndʒ/ n．海绵

garbage / "gɑːbɪdʒ / n．垃圾

evaporate / ɪ"væpəreɪt / v．蒸发

seaweed /"si:wi:d/ n．海草

注释：

1.Much gold and silver drift dissolved in the waters of the sea, too.还有不少金和银的漂流物溶解在海水里。

2.Dumping garbage into the ocean is killing off sea life.把垃圾往大海里倾倒就是在把海洋生物杀绝灭尽。

练习:

A.Natural sponges become cleaning aids.

B.We pollute the ocean when we use it as a garbage dump.

C.The area of the sea is becoming smaller and smaller.

D.Along with salt, other minerals are left after evaporation.

E.We even use their bones for fertilizer.

F.Some of its contents may cause illness.

空1

A:A B:B C:C D:D E:E F:F

提示右房肥大的P波是（）

A:二尖瓣型P波 B:肺性P波 C:逆行p波 D:低平P波 E:双向P波

提示左房肥大的P波是（）

A:二尖瓣型P波 B:肺性P波 C:逆行p波 D:低平P波 E:双向P波