题目内容

形旁表意功能的强弱与汉字的使用频率成正比关系。( )

A. 对
B. 错

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The Yellow Mountain is one of 1._ in China. It lies in the south of 2._. The Yellow Mountain is a 3._ _ _ __, and a 4. _ _ __. Every year thousands of Chinese and foreigners pay a visit there.While you are climbing the mountain, you can enjoy 5. _ __, 6. _ _, and 7. ___ around you. In the early morning when the sun rised, the sea of clouds is colorful which is extremely spectacular. It's really a nice place to visit.

心室肌细胞动作电位平台期是下列哪些离子跨膜流动的综合结果：

A. Na＋内流，Cl－外流
B. Na＋内流，K＋外流
C. K＋内流，Ca2＋外流
D. Ca2＋内流，K＋外流

关于心脏特殊传导系统，下述哪项错误：

A. 它包括窦房结，房内传导
B. 它包括房室交界区，房室束及其分支
C. 它们传导兴奋的速度都比心室肌快
D. 其末梢是浦氏纤维

评价心室功能的金标准:

A. 心导管术
B. 超声心动图
C. 心输出量
D. 心指数