皮皮学，免费搜题
登录
搜题
【单选题】
研究人员通过基因操作，使实验鼠体内能够代谢葡萄糖和脂肪酸，但不能代谢醋酸，然后比较这些实验鼠和正常实验鼠在喂给饵料和绝食48小时的情况下，身体状态有何不同。结果发现，在被迫长时间绝食的状态下不能代谢醋酸的实验鼠体温和耐力明显降低。醋酸是生命体内基本物质，而实验鼠身体构造又与人体非常接近。由此推出( )。A.
醋酸在其维持人体能力供应中起着至关重要的作用
B.
醋酸可以作为人体一种不会提升血糖值的能量源
C.
代谢产生的三磷酸腺苷是生命活动的能量源泉
D.
在持久运动时，脂肪酸和酮体是ATP的主要来源
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Even today,when air and road travel has made Africa so readily accessible to Europeans and Americans,there are innumerable aspects of African life which tend to take one by surprise. The unfamiliar li...
A.
This fact makes it easier to accept the unfamiliarity of West Africa.
B.
This fact makes West Africa seem even stranger.
C.
This fact makes no difference to our reaction to West Africa.
D.
This fact has been greatly overemphasized.
【简答题】A．On foot and by boat. B．By car and on foot. C．By air and by car. D．By air and by bus.
【单选题】Living near the sea, _____. [ ]
A.
we enjoy healthy air and beautiful sight
B.
healthy air and beautiful sight is what we enjoy
C.
it is healthy air and beautiful sight we enjoy
D.
so we enjoy healthy air and beautiful sight
【单选题】Which of the listed properties does warm air possess ().
A.
It rises above cooler air and cools as it rises
B.
Atmospheric pressure drops as warm air rises
C.
Moisture in warm air condenses as the air is cooled
D.
All of the above
【简答题】Planting trees around poultry farms can improve air and water quality -- and relations with neighbors. Research has shown that just three rows of trees near poultry houses can reduce the release of du...
相关题目：