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问题 单项选择题

下述形成心室肌细胞动作电位的离子基础的陈述，错误的是（）

A.0期主要是Na+内流

B.1期主要是C1-外流

C.2期是Ca2+内流和K+外流

D.3期主要是K+外流

E.4期有K+内流

答案

参考答案：B

单项选择题

在实行团队奖励计划时，为激励团队中贡献较大的成员，避免“大锅饭”现象的发生，可以采用的分配方法是（）。

A.平等分配奖金

B.一部分奖金支付基于员工个人绩效，一部分基于团队绩效

C.根据每位成员的基本薪酬与团队全体成员总体的基本薪酬之比分配奖金

D.完全根据个人在团队工作中的贡献分配奖金
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单项选择题

It was a very hot day in the middle of summer, and there were no trees along the street. Mr. Read (41) his shop at half past five, and went out into the street and began walking to the bus. He was a very (42) man. The sun shone straight down the street, and in a few minutes Mr. Read (43) very hot.

A. opened B. reached C. closed

A small boy came out of another (44) in the street and followed Mr. Read. He stayed very (45) him all the time, and he kicked Mr. Read’s (46) several times. Mr. Read looked at him angrily each time.After the fourth time, Mr. Read stopped, turned (47) and said to the small boy, "What are you doing (48) following me like that! You’re going to hurt my feet."
"I’m (49) , but don’t stop me, please!" the small boy said. "It’s very hot today, and there isn’t (50) shade anywhere else in the street!\
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