电生理学检查有助于臂丛神经损伤的定位检查，下列叙述错误的是（）。
A.神经损伤一般于3周后显著变性，所以肌电图检查应在损伤后3周进行，隔3个月复查
B.凡肌电显示去神经性纤维颤动电位，为椎间孔外臂丛损伤
C.凡显示无正常电位，表示椎间孔外臂丛神经损伤
D.凡受神经根支配的任何肌肉存在主动活动，表示不完全神经根损伤
E.肌电检查仅能作为一项辅助检查，诊断主要依据临床查体
参考答案：B
解析：ADE选项一般可除外。
| 阅读短文，从方框内所给的ABCDE中，选出恰当的一项还原到文中合适的位置，使文章意思完整。 | |||||
| We sometimes call the lion“the king of the jungle”because it is stronger and more dangerous than other animals. 1 It is the highest animal in the land food chain. In the sea, the shark is one of the animals at the top of the food chain. It can swim faster than most other sea animals. 2 3 People are! We are not the biggest or fastest, but we are the cleverest. We could not run faster than cheetahs, so we invented cars and now we can move the fastest. We could not fight better than lions, so we invented guns. Now we can hunt the best. People’s inventions are clever, but they can be dangerous, too. For example, people invented factories, and now they make the air and rivers dirty. 4 Dirty rivers kill fish, then bears cannot eat the fish and die. If we kill one part of the food chain, other parts also die. Rememberthat we are part of the food chain, so we are in danger, too! 5 We should and we could do something for the world!
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